Canadian application, no grantCanada
Ring binder carrier rail
CA 2094020 A1 · Owner: World Wide Stationery Mfg. Co. Ltd. · Inventors: Law, Chun Cheung
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A carrier rail for a ring binder which is provided with a plurality of ribs along the longitudinal axis of the rail.
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 April 14, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 14, 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.
FiledApril 14, 1993
GrantedNo grant recorded
Term endedApril 14, 2013
Patent numberCA 2094020 A1
Classification (IPC)B42F3/04 +1 more
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.