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Expired Canadian patentCanada

Current sense demodulator

CA 1260056 A · Owner: Performance Controls Inc. · Inventors: Venditto, Joseph G. Jr.; Yost, Donald A.; Goff, Jerry K.

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

Abstract Of The Disclosure Apparatus for providing a current signal representative of a current through a load for use in connection with a current amplifier driven by a drive signal having first and second states comprises first means for providing a sense signal representative of the magnitude of the current through the load and second means for receiving the sense signal and responsive to the drive signal for supplying the sense signal in an inverted form when the drive signal is in the first state and for supplying the sense signal in a non inverted form when the drive signal is in the second state; whereby the second means provides an output signal which is representative of both the …

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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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 25, 1985
GrantedSeptember 26, 1989
Term endedSeptember 26, 2006
Patent numberCA 1260056 A
Classification (IPC)H02M7/48 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedJan 25, 1985Patent grantedSep 26, 1989Term endedSep 26, 2006

Sources & verification

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