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Class Information
Number: 182/121
Name: Fire escape, ladder, or scaffold > Ladder and platform > Platform with ladder as support > Detachable step, single ladder > Plural rung-engaging
Description: Device in which the step or platform is attached to or engages a plurality of rungs of the ladder.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4695023 |
Platform assembly for slanted ladder |
Sep. 22, 1987 |
| 4687075 |
Locking safety platform for a ladder |
Aug. 18, 1987 |
| 4653608 |
Extension ladder caddy |
Mar. 31, 1987 |
| 4646878 |
Portable ladder step |
Mar. 3, 1987 |
| 4618030 |
Ladder platform |
Oct. 21, 1986 |
| 4616734 |
Roof Scaffolding |
Oct. 14, 1986 |
| 4615412 |
Ladder rest device |
Oct. 7, 1986 |
| 4542874 |
Bracket for a work platform |
Sep. 24, 1985 |
| 4533018 |
Ladder support |
Aug. 6, 1985 |
| 4496025 |
Foot support for ladder |
Jan. 29, 1985 |
| 4489911 |
Ladder-mountable device |
Dec. 25, 1984 |
| 4482030 |
Support platform |
Nov. 13, 1984 |
| 4452337 |
Sectional scaffolding raising apparatus |
Jun. 5, 1984 |
| 4450935 |
Portable adjustable roof platform |
May. 29, 1984 |
| 4440263 |
Attachment to a ladder |
Apr. 3, 1984 |
| 4425985 |
Ladder platform |
Jan. 17, 1984 |
| 4401187 |
Ladder platform accessory |
Aug. 30, 1983 |
| 4359138 |
Supporting device for ladders |
Nov. 16, 1982 |
| 4342374 |
Ladder support |
Aug. 3, 1982 |
| 4331217 |
Ladder step and stabilizer |
May. 25, 1982 |
| 4306700 |
Ladder jack |
Dec. 22, 1981 |
| 4300740 |
Easily movable shelf for step ladder |
Nov. 17, 1981 |
| 4261435 |
Ladder tray |
Apr. 14, 1981 |
| 4241807 |
Step attachment for ladders |
Dec. 30, 1980 |
| 4212371 |
Ladder attachment |
Jul. 15, 1980 |
| 4211307 |
Removable step or shelf for ladder |
Jul. 8, 1980 |
| 4085819 |
Platform attachment for a ladder |
Apr. 25, 1978 |
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