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Expired Canadian patentCanada

Lift with electrical grounding means

CA 1071702 A · Owner: Eisenhauer Manufacturing Company (The) · Inventors: Eisenhauer, Leigh E.

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 device for suspending a raft from a transport such as a helicopter so that the raft can be lowered and raised into and out of the water without subjecting persons attending or occupying the raft to an electric shock from a static charge that nay be carried by the transport. The device comprises a metal plate attachable to the transport having straps provided with snap fasteners releasably attachable to the raft. A ground wire connected to the plate is sufficiently longer than the straps so as to contact the water and ground the transport before the straps contact the raft.

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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 February 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 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.
Filed—
GrantedFebruary 12, 1980
Term endedFebruary 12, 1997
Patent numberCA 1071702 A
Classification (IPC)H05F3/02

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedFeb 12, 1980Term endedFeb 12, 1997

Sources & verification

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