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Expired Canadian patentCanada

Ergonometric transcutaneous electrical nerve stimulator

CA 1321242 C · Owner: Studer, John Eugene, Jr. · Inventors: Dieken, Alan Paul; Dufresne, Joel Rivard; Studer, John Eugene, Jr.

CIPO record

Overview

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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 An ergonometric transcutaneous electrical nerve stimulator (10) especially designed for dysmenorrhea and low back pain. The ergonometric factors include a housing containing the electrical circuit, the housing (12) being of a generally flattened disk shape with well rounded edges. A first power switch (14) is located on a side edge of the housing (12), and one or more rocker switches (18, 20) controlling the amplitude of the current stimulation pulses (38) to be supplied by one or more channels from the stimulator (10) are mounted on a side edge of the housing (12). The housing (12) of the stimulator (10) has one or more attachment points (32, 34) on the side edge …

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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 August 10, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 10, 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.
FiledApril 14, 1988
GrantedAugust 10, 1993
Term endedAugust 10, 2010
Patent numberCA 1321242 C
Classification (IPC)A61N1/34

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedApril 14, 1988Patent grantedAug 10, 1993Term endedAug 10, 2010

Sources & verification

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