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.
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363-131 121-55A 14-.5
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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)