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Expired Canadian patentCanada

Junction box

CA 1284374 C · Owner: Mcneil, Sandy · Inventors: Petty, John; Mcneil, Sandy

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

Abstract of the Disclosure A junction box to which two or more lengths of conduit may be joined is disclosed. The box has a plurality of ports located around it, each port having an inwardly radially extending wall with cut-outs of at least two different sizes, and a projection extending radially inwardly into the port. Connectors are provided which are adapted to engage in the port and have a set of castellations at one end sized to fit in the cut-outs in the ports. The connectors are connected to a port by alligning the castellations with the cut-outs and rotating the connectors thereby locking the connectors in place. Connectors of varying diameters may be used.

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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 May 21, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 21, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 21, 1987
GrantedMay 21, 1991
Term endedMay 21, 2008
Patent numberCA 1284374 C
Classification (IPC)H02G3/04 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedAug 21, 1987Patent grantedMay 21, 1991Term endedMay 21, 2008

Sources & verification

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