Canadian application, no grantCanada
Apparatus for positioning the center of an optical fiber along a predetermined reference axis
CA 2022473 A1 · Owner: Johnson, Melvin Harry · Inventors: Lee, Jerard Dana; Willis, Frank Marsden; Johnson, Melvin Harry
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 positioning apparatus for positioning a point on a cylindrical member having a small diameter such as an optical, fiber, along a predetermined reference axis regardless of the outer diameter of the fiber. 73
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 August 1, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 1, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 1, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 1, 1990
GrantedNo grant recorded
Term endedAugust 1, 2010
Patent numberCA 2022473 A1
Classification (IPC)G02B6/38
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.