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Expired Canadian patentCanada

Program timer control

CA 1201515 A · Owner: The Babcock & Wilcox Company · Inventors: Scheib, Thomas J.; Moss, William H.

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

A program timer control is disclosed for applying one of at least two functions to a parameter controller which is varied over the course of a full day. A day counter counts the passage of days and operates a switch to control the Parameter controller according to the non-working day function when a weekend day occurs. A manually operable setting element is also provided when the following day is a holiday to select the non-working day function. All other days are assumed to be working days so that the switch is operated to apply the working day function to the parameter controller. -15-

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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 4, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 4, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 23, 1983
GrantedMarch 4, 1986
Term endedMarch 4, 2003
Patent numberCA 1201515 A
Classification (IPC)H03K17/29 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMarch 23, 1983Patent grantedMarch 4, 1986Term endedMarch 4, 2003

Sources & verification

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