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Expired Canadian patentCanada

Back massager

CA 1303923 C · Owner: Yong, Kim C. · Inventors: Yong, Kim C.

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 back massager device which comprises a back support, a footrest connected adjacent to one end of the back support and a headrest connected to the opposite end of the back support. The back support is positioned on resilient padding placed on a support table. The back support is preferably in the form of a pair of spaced longitudinally extending bars inserted in a cushioning material. A first series of vibrators is connected to one of the support bars and a second series of vibrators is connected to the other support bar. In the preferred embodiment, the vibrators each comprise an electrical coil a magnet associated with the coil for actuation thereby the, magnet being mounted on a …

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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 June 23, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 23, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 3, 1988
GrantedJune 23, 1992
Term endedJune 23, 2009
Patent numberCA 1303923 C
Classification (IPC)A61H23/02 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedFeb 3, 1988Patent grantedJune 23, 1992Term endedJune 23, 2009

Sources & verification

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