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Expired Canadian patentCanada

Switch-proof pressure sensitive adhesive label

CA 1091715 A · Owner: Monarch Marking Systems, Inc. · Inventors: Williams, Frederick P.

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

This invention relates to switch-proof labels useful for marking objects in a manner such that if one were to attempt to transfer the label to another object the label would be destroyed or defaced to such an extent that its transference would be noticeable. The label comprises laminate comprising a transparent or translucent outer sheet having an information containing pattern printed on its inner surface said printed, inner surface having a coating of pressure sensitive adhesive film coated thereon. The printed pattern has a lesser affinity for the outer sheet than the printed pattern has for the adhesive. The affinity of the adhesive for the surface to which the laminated label is …

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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, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 16, 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.
FiledOctober 7, 1977
GrantedDecember 16, 1980
Term endedDecember 16, 1997
Patent numberCA 1091715 A
Classification (IPC)B32B33/00 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedOct 7, 1977Patent grantedDec 16, 1980Term endedDec 16, 1997

Sources & verification

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