Fiberglass railcar roof
CA 2219312 C · Owner: Fecko, Joseph V. · Inventors: Fecko, Joseph V.; Packer, Paul L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fiberglass railcar roof that includes a fiberglass surface with a central portion and plural elongate fiberglass ribs extending transverse to the longitudinal axis, of the fiberglass surface. In a first embodiment the central portion has a , cross-sectional configuration that defines a first arc and the ribs each have , broad widths and each extend above the central portion to define a second arc that intersects the first, arc. In a second embodiment the ribs have arcuate cross-sections and extend downward from the lower face of the central portion. Also disclosed are embodiments, of the previously described roofs that are configured for use on refrigerated and, cryogenic railcars.
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 October 24, 1997 and granted January 30, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 2019.
- 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.