Fiber viewer
CA 2076715 C · Owner: Mansfield, Charles M. · Inventors: Hartnagel, Heinz; Kastens, Raymond J.; Mansfield, Charles M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A viewer for inspecting the condition of an end face of an optical fiber which has been cleaved while, the fiber is still in the cleaving device. The viewer takes the form of a pocket-type microscope having a cylindrical body with an eyepiece at one end and an objective lens at the other end, and an adaptor at the end of the body having the objective lens. The adaptor has a plurality of legs having notches therein forming seats which are specially adapted to be mounted on fibersupporting pads of the cleaver. The adaptor is removable from the body so that different adaptors may be used for different cleavers. The body fits in a socket of the adaptor which may be disposed at an angle with …
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 24, 1992 and granted February 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 24, 2014.
- 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.