What follows are the subclasses from one class of the Manual of Classification for US patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retrieve patent titles by entering the class/subclass in the box below.
Enter a class/subclass code here to get a list of patent titles. Use
any of the following forms:
363-131 121-55A 14-.5
that is, no embedded spaces, class and subclass seperated by a dash, and any
subclass letters capitalized. Currently Design Patent titles (those in the
classes of the form Dxx.yy) are not retreivable.
Class Number: D25 Class Title: BUILDING UNITS AND CONSTRUCTION ELEMENTS Subclass Subclass Number Title 1 STRUCTURE (1) 2 .Swimming pool 3 .Combined with diverse article, e.g., airport complex, etc. 4 .Clustered identical units 5 .Four or more levels 6 ..Tower 7 .Simulative 8 ..Animate 9 ...Humanoid 10 ..Edible article or container therefor 11 ..Vehicle 12 .Arena or stadium 13 .Geodesic dome (2) 14 .Grain storage 15 .Greenhouse 16 .Single occupant type, i.e., telephone booth, privy, ticket booth, etc. (3) 17 .Having intersecting angular or curved roofs (4) 18 .Having curved or vaulted roof 19 ..Dome 20 ..Sinuous 21 ..Concave, catenary or flexibly suspended 22 .Having angular roof 23 ..Trapezoidal or triangular surface 24 ...Gambrel type 25 ...Mansard type 26 ...Pyramidal 27 ...Zig-zag type, i.e., sawtooth 28 ...Inverted 29 ...A-frame type 30 ...Isolated slanted surface 31 .Circular or oval in plan 32 .Polygonal in plan 33 .Fully enclosed 34 ..Having carport or garage 35 PREFABRICATED UNIT (5) 36 .Underground service vault (6) 37 .Elevator cab interior (7) 38 .Railing unit or fence (8) 39 ..Combined, e.g., fence and gate 40 ..Simulative 41 ..Swimming pool grab rail 42 ..Post or board extending above rail, e.g., picket type 43 ..Post and rail type 44 ...Rail centered on post 45 ..Wire type (9) 46 ...Barbed 47 .Closure (10) 48 ..For passage, e.g., door, etc. 49 ...Flexible or folding 50 ...Gate 51 ....Turnstilee 52 ..Window 53 ..Screen or guard (11) 54 ...Window well cover 55 .Finishing unit (12) 56 ..Roof or canopy (13) 57 ...Awning type 58 ..Partition, wall or ceiling (25) 59 ...Exterior, e.g., storefront 60 ..Surround for door window, panel, etc. (14) 61 .Framing unit, e.g., building frame (15) 62 STAIR, LADDER, SCAFFOLD OR SIMILAR SUPPORT (16) 63 .Stepped (17) 64 ..Ladder 65 ...Step stool type 66 .Scaffold 67 .Sawhorse 68 .Element or attachment (18) 69 ..Stair tread, step or ladder rung 100 TRELLIS OR TREILLAGE UNIT 101 .Simulative 102 ARCHITECTURAL STOCK MATERIAL (19) 103 .Transparent or translucent 104 ..Simulative 105 ...Plant life 106 ..Three or more pattern repeats about axis on side (20) 107 ...Hollow type 108 ..Hollow type 109 ..Symmetrical on two axes on one side (21) 110 ..Unidirectional repeat pattern 111 ..Random arrangement of pattern elements within repeat unit (22) 112 .Splash block 113 .Construction block or brick type (23) 114 ..Perforated or openwork (24) 115 ...Symmetrical 116 ....Arcuate detail 117 .....Cicular or oval 118 ....Rectangular or square detail 119 .Extruded shape (34) 120 ..Three or more repeats, or uniform configuration, about axis 121 ..Bilaterally symmetrical 122 ...With hollow core 123 ...Parallel repeating ribs or grooves 124 ..With hollow core 125 ..Parallel repeating ribs or grooves 126 .Post or beam 127 ..With cross arm or cantilevered support 128 ..Three or more repats, or uniform configuration, about axis 129 ...Vertically fluted 130 ..Simulative 131 ..With notch or tang for receiving attachment (e.g., fencing wire, etc.) 132 ..Openwork type or with opening 133 ..Element or attachment 134 ...Cross arm or cantilevered support 135 ...Capital or cap 136 .Elongated molding type (e.g., crown, dentil, etc.) (26) 137 ..Simulativee 138 .Panel, tile or applique or floor, wall, roof, etc. (27) 139 ..Roofing, or wall shingle 140 ...Tile type 141 ...Stamped, crimped or bent material having uniform thickness 142 ...Perforated or openwork 143 ...Three or more repeats, or uniform configuration, about axis 144 ...Symmetrical on two axes 145 ..Relief carving or medallion type (28) 146 ...Humanoid simulation 147 ...Three or more repeats, or uniform configuration, about axis (e.g., medallion, etc.) 148 ...Symmetrical on two axes 149 ..Simulative, or natural material pattern 150 ...Wood grain 151 ...Brick or stone (29) 152 ..Perforated or openwork (30) 153 ...Symmetrica pattern or pattern unit 154 ....Arcuate 155 .....Circular or oval 156 ....Rectangular or square 157 ..Symmetrical pattern or pattern unit (31) 158 ...Three or more repeats, or uniform configuration, about axis 159 ....Consisting entirely of material having uniform thickness 160 ...On two axes 161 ....Consisting entirely of aterial having uniform thickness 162 ...Consisting entirely of material having uniform thickness 163 ..Textured (e.g., pitted, cratered, drilled, etc) 164 .Elongated (32) 199 MISCELLANEOUS (33)