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Expired Canadian patentCanada

Apparatus for manufacturing self-attaching fastener

CA 1215221 A · Owner: Btm Corporation · Inventors: Sawdon, Edwin G.

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

An assembly is disclosed having a simple standard fastener, secured to sheet material such as sheet metal. A support strap is integrally formed in an offset relationship with the sheet material and opposite sides of the fastener are deformed to interlockingly engage the remainder of the sheet material. A method and apparatus are also disclosed for securing the fastener to the sheet material in substantially one operation, including alternate manual and automatic means for feeding fasteners to such apparatus.

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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 December 16, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 16, 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.
FiledMarch 28, 1983
GrantedDecember 16, 1986
Term endedDecember 16, 2003
Patent numberCA 1215221 A
Classification (IPC)B23P19/00 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMarch 28, 1983Patent grantedDec 16, 1986Term endedDec 16, 2003

Sources & verification

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