Service ladder
CA 1294589 C · Owner: Petty, Allen · Inventors: Petty, Allen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A foldable ramp structure is disclosed arranged to be mounted on a pick-up truck and to be used for servicing aircraft or the like purposes wherein the ramp is to provide a stairway to an elevated point. The invention provides a first stair assembly and an intermediate platform. Both are fixedly secured to the box of the truck. A second stair assembly extends forward and horizontally away from the platform at a level just, above the top of the cab of the pick-up truck. In an extended state, it is only the second stair section which is raised by pivoting same about a transverse axis located near the rear end of the cab. m e free end of the second stair assembly is provided with a horizontal …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 21, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.