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Expired Canadian patentCanada

Totalizer

CA 1069218 A · Owner: General Signal Corporation · Inventors: Coia, Pasco A.

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

of the Invention, A totalizer is provided which is adapted to accept a variety of process signals at the input thereof which process, signals will be in analog form. The signals are then first converted into digital form by first converting all of the types of input signals to a voltage signal that is proportional to the value of the input signal and then converting this voltage signal to a series of pulses whose repetition rate is proportional to the voltage input and then counting these pulses on a decade counter which is provided with a decimal decoder through which a scale factor may be introduced into the counter. The output of the inital decade counter is then fed into a memory bank …

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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 January 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 1, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 1, 1980
Term endedJanuary 1, 1997
Patent numberCA 1069218 A
Classification (IPC)G06F7/50 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 1, 1980Term endedJan 1, 1997

Sources & verification

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