with both rigid and non-rigid longitudinal members

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Patents Grantslast 30 patents

Information Patent Grant
Folding and self-erecting ladder
- Patent number 9,500,026
- Issue date Nov 22, 2016
- Maurice J. Mountain
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Linkage-driven power step
- Patent number 8,251,178
- Issue date Aug 28, 2012
- Actuant Corporation
- Borivoj Krobot
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Safety ladder
- Patent number 8,074,771
- Issue date Dec 13, 2011
- David A. Nickelson
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Fire escape ladder with integral air cushion
- Patent number 5,203,427
- Issue date Apr 20, 1993
- Anthony E. Williams
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
1980595
- Patent number 1,980,595
- Issue date Nov 13, 1934
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
1696357
- Patent number 1,696,357
- Issue date Dec 25, 1928
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
1603638
- Patent number 1,603,638
- Issue date Oct 19, 1926
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS