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Class Information
Number: 182/207
Name: Fire escape, ladder, or scaffold > Ladder > Extension
Description: Device comprising lapping ladder sections relatively movable to provide for length adjustment.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7316293 |
Extension ladder with improved mechanism |
Jan. 8, 2008 |
| 7267197 |
Add-on extension ladder |
Sep. 11, 2007 |
| 7100741 |
Roller assembly for a ladder |
Sep. 5, 2006 |
| 7048094 |
Extending ladder and associated manufacturing methods |
May. 23, 2006 |
| 6913113 |
Adjustable-height ladder |
Jul. 5, 2005 |
| 6883645 |
Extending ladder and associated manufacturing methods |
Apr. 26, 2005 |
| 6708800 |
Extending ladder and associated manufacturing methods |
Mar. 23, 2004 |
| 6269909 |
Fiberglass extension ladder and methods for manufacturing the same |
Aug. 7, 2001 |
| 5924523 |
Adjustable ladder |
Jul. 20, 1999 |
| 5896945 |
Ladder safety tip strap |
Apr. 27, 1999 |
| 5758745 |
Extension ladder, combination end cap/guide bracket, and method for climbing |
Jun. 2, 1998 |
| 5738186 |
Extensible ladder |
Apr. 14, 1998 |
| 5524398 |
Portable collapsible tower |
Jun. 11, 1996 |
| 5439072 |
Modular ladder system |
Aug. 8, 1995 |
| 5350038 |
Foldable extension ladder and ladder sections therefor |
Sep. 27, 1994 |
| 5103934 |
Method and apparatus for providing a fire escape for a multi-story building |
Apr. 14, 1992 |
| 5024291 |
Ladder assembly |
Jun. 18, 1991 |
| 4924970 |
Ladder apparatus |
May. 15, 1990 |
| 4854420 |
Securing means for a double step ladder |
Aug. 8, 1989 |
| 4750587 |
Ladder and method of using ladder for escape |
Jun. 14, 1988 |
| 4586585 |
Longitudinally extensible stringer and stairway |
May. 6, 1986 |
| 4519478 |
Ladder extension coupling |
May. 28, 1985 |
| 4491196 |
Telescopic beam |
Jan. 1, 1985 |
| 4429766 |
Ladder consisting of sliding sections |
Feb. 7, 1984 |
| 4401185 |
Safety control system for container operations |
Aug. 30, 1983 |
| 4376470 |
Fiberglass ladder |
Mar. 15, 1983 |
| 4355701 |
Ladder |
Oct. 26, 1982 |
| 4210224 |
Longitudinally variable ladder |
Jul. 1, 1980 |
| 4161997 |
Self-storing step structure for vehicular mounting |
Jul. 24, 1979 |
| 4157742 |
Accommodation ladder arrangements |
Jun. 12, 1979 |
| 4102433 |
Ladder |
Jul. 25, 1978 |
| 4100995 |
Telescopic set of steps with variable slope |
Jul. 18, 1978 |
| 3948353 |
Extension ladder |
Apr. 6, 1976 |
| 3948352 |
Extension ladder with ladder leveler means |
Apr. 6, 1976 |
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