Device for measuring and indicating changes in resistance of a living body
CA 1297165 C · Owner: Author'S Family Trust · Inventors: Ferreira, Marc; Clifford, Ronald; Ploetz, Bruce R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for measuring and indicating changes in the resistance of a living body including an analog portion a, digital portion and a source of power for supplying stable power to the analog and digital portions. The analog portion includes a bridge network which includes a potentiometer for setting a reference level for the device. The digital portion includes a potentiometer which turns together with the potentiometer provided in the analog portion and digital processing circuitry and digital displays for determining and displaying a count. indicative of the position of the potentiometer and the total amount of rotation of said potentiometer. In addition a com-, puter could be interfaced …
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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 March 10, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 10, 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.