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Expired Canadian patentCanada

Freezing items for display in electronic watthour register

CA 1285027 C · Owner: General Electric Company · Inventors: Varney, Albert R. Jr.

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

An electronic register for an electric watthour metering system includes a display buffer for receiving, at substantially the same time all data, items to be displayed. The data items in the display buffer are scrolled to a display in sets appropriate for the capacity of the display. Each set is maintained on the display for as long as required for human reading. The displayed items, having been taken into the display buffer at the same instant are consistent with each other regardless of the length of time required to complete the display sequence.

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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 June 18, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 2008.
  • 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 17, 1988
GrantedJune 18, 1991
Term endedJune 18, 2008
Patent numberCA 1285027 C
Classification (IPC)G01R21/00

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMarch 17, 1988Patent grantedJune 18, 1991Term endedJune 18, 2008

Sources & verification

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