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Expired Canadian patentCanada

Attachment device

CA 1269017 C · Owner: Kaivanto, Pekka Juhani · Inventors: Kaivanto, Pekka Juhani

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 clamp to attach to a flexible sheet. The clamp has a first member with sides narrowing longitudinally to a first end and inclining upwardly inwardly. The first member can receive an attachment. A second member comprises a main body formed with a recess that narrows longitudinally to a first end and with interior sides that incline upwardly inwardly. Thus the first member can be received within the second member with the flexible sheet clamped between.

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

  • Granted May 15, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 1, 1987
GrantedMay 15, 1990
Term endedMay 15, 2007
Patent numberCA 1269017 C
Classification (IPC)B42F1/00 +2 more

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedJune 1, 1987Patent grantedMay 15, 1990Term endedMay 15, 2007

Sources & verification

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