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Expired Canadian patentCanada

Tunable splice for fiber optics

CA 1306376 C · Owner: Minnesota Mining And Manufacturing Company · Inventors: Lee, Nicholas A.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A fiber optic splice includes two cylindrical ferrules of different diameters and having bores parallel to but offset from, the major axes of the ferrules. The ferrules are inserted into a deformable housing where they rest in a V-groove. When external pressure is applied to the housing it is deformed in a predetermined manner allowing, the ferrules to rotate and when the pressure is removed the, ferrules are held in place.

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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 August 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 9, 1989
GrantedAugust 18, 1992
Term endedAugust 18, 2009
Patent numberCA 1306376 C
Classification (IPC)G02B6/38 +1 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedJan 9, 1989Patent grantedAug 18, 1992Term endedAug 18, 2009

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.