Patent Yard Sign in
Expired Canadian patentCanada

Device to counterbalance the surrounding electromagnetic radiation

CA 1317017 C · Owner: Deckers, Francois E. · Inventors: Deckers, Francois E.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A closed receptacle made of a non metallic material includes at least one interactive module, each interactive module comprising two parts, a first of said parts consisting of a permanent magnet and the second part consisting of a bar made of carbon, natural or artificial graphite or magnesium said two parts being spaced apart such that said bar is located in the magnetic flux produced by said magnet. The receptable has fixing or suspension means for the fixation or suspension of the device onto a surface of or inside a machine or for allowing the device to be hung from a necklace.

Read the whole patent

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 April 27, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 27, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 3, 1988
GrantedApril 27, 1993
Term endedApril 27, 2010
Patent numberCA 1317017 C
Classification (IPC)A61N1/16 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJune 3, 1988Patent grantedApril 27, 1993Term endedApril 27, 2010

Sources & verification

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