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Expired Canadian patentCanada

Apparatus for providing protection for station protectors for telephone systems

CA 1262560 C · Owner: Splitt, Frank G. · Inventors: Splitt, Frank G.

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 station protector such as the type having pairs of, arrestors positioned in adjacent wells with screw cap enclosing the, wells, is provided with positive protection by interconnecting a pair of screw caps by means which prevents turning of either screw cap to, provide access to a well, without breaking a connecting member and thus giving an indication of such turning and access. The connecting, member can be a bar attached to the screw caps or cap member, extending over the screw caps and connected to them The cap members, can be connected to the screw caps by bonding crimping or other, method. - i -

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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 31, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 31, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 11, 1985
GrantedOctober 31, 1989
Term endedOctober 31, 2006
Patent numberCA 1262560 C
Classification (IPC)H01T4/06

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedSep 11, 1985Patent grantedOct 31, 1989Term endedOct 31, 2006

Sources & verification

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