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Expired Canadian patentCanada

Concrete anchor

CA 1088342 A · Owner: Kabushiki Kaisha Mikado · Inventors: Naka, Kozaburo

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

Title of the Invention, Concrete Anchor Abstract of the Disclosure, An anchor which is embedded in a concrete ceiling for suspension of a ceiling panel, electrical wiring pipe or air conditioning duct or the like comprises a metallic suspension member and a support member formed of a synthetic resin material. The suspension member includes a cylindrical body which is open at its lower end and having an axial threaded bore, a circular head flange on the top end of the body, and a plurality of needles having their one end secured to said flange and extending downwardly in parallel and spaced relationship with the body. The support member includes a sleeve surrounding the body and a pedestal …

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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 October 28, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 28, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 21, 1978
GrantedOctober 28, 1980
Term endedOctober 28, 1997
Patent numberCA 1088342 A
Classification (IPC)E04B1/41 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedNov 21, 1978Patent grantedOct 28, 1980Term endedOct 28, 1997

Sources & verification

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