All purpose railway spine car
CA 2107199 C · Owner: Beers, Albert A. · Inventors: Beers, Albert A.; Hesch, Harold E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved articulated railway spine car unit for carrying highway truck trailers and/or containers has a center sill which extends substantially the entire length of the car unit. The center sill has end portions with upper surfaces depressed with respect to the upper surface of a longitudinally extended center portion. A retractable fifth wheel or trailer hitch is located on the upper surface of at least one end portion of the center sill. The upper surface of the trailer hitch when retracted onto the center sill, is at substantially the same level as the center portion of the center sill. The raised center sill center portion both provides back-up support for the floors of containers …
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 September 28, 1993 and granted January 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 28, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 2015.
- 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.