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Expired Canadian patentCanada

Refractory fiber module retainer

CA 1202175 A · Owner: General Signal Corporation · Inventors: Schiferl, Joseph J.

CIPO record

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

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Abstract From the Canadian patent

Abstract of the Disclosure A refractory fiber module retainer system and a method of forming such retainer system is disclosed; the system includes a unitary refractory fiber module possessing substantial rigidity; the module being formed such as by molding, to, have a perforated support means embedded within the module and, with a suitable bore for enabling the required fastening of the module to a furnace shell or the like. The system further includes a stud as part of the fastening means said stud being, passed through the bore and through an opening in the support means such that the stud can be readily welded to the furnace shell after the module has been placed against the shell. A …

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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 March 25, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 25, 2003.
  • 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 10, 1982
GrantedMarch 25, 1986
Term endedMarch 25, 2003
Patent numberCA 1202175 A
Classification (IPC)F27D1/14

Timeline

Timeline From CIPO dates

1983198619891992199519982001Application filedNov 10, 1982Patent grantedMarch 25, 1986Term endedMarch 25, 2003

Sources & verification

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