Optical package
CA 1312667 C · Owner: British Telecommunications Public Limited Company · Inventors: Constantine, Philip Denis; Marshall, Ian William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lens assembly for focussing the light output of a device 2 on to a target 4, when there is relative movement between the target and device. The assembly comprises a pair of lenses with the device at the focus of the first and the target in the focal range of the second lens.
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
- Granted January 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 12, 2010.
- 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.