Tandem trailer truck for transporting elongate objects
CA 2035803 C · Owner: Whitehead, Jerald M. · Inventors: Whitehead, Jerald M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A truck-trailer-trailer combination including an intermediate trailer that has two load carrying bunk assemblies. The intermediate trailer carries the rearward, end of a first set of elongate objects and the forward end of a second set of elongate objects. The forward end of the first set of elongate objects is carried, by the truck and the rearward end of the second set of elongate objects is carried, by a rear trailer. The truck-trailer-trailer combination carries such loads in a, manner that complies with existing highway regulations and allows the user to reduce the number of trips required in order to transport a given number of elongate objects.
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
- Filed February 6, 1991 and granted July 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 6, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 6, 2013.
- 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.