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Expired Canadian patentCanada

Condition responsive indicating system for interactively indicating status of a plurality of electrical appliances

CA 2220573 C · Owner: Advanced Laundry Devices, Inc. · Inventors: Bogner, Douglas J.; Mernick, Jason H.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The operating status of a plurality of laundry appliances including washing machines (12) and/or driers (13) is sensed and a controller (205) generates , and transmits corresponding status signals to remote transceivers (35) which include visual (45) or audio (46) indicators for indicating the information. Each transceiver (35) can interrogate the controller (205) to determine the status of the appliances (12, 13), with the status being transmitted only to the interrogating transmitter. Each transceiver (35) can also transmit a reservation signal to the controller (205) to reserve a selected appliance for a predetermined period of time. The controller (205) also transmits status …

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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

  • Filed May 23, 1996 and granted September 12, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 23, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 23, 1996
GrantedSeptember 12, 2000
Term endedMay 23, 2016
Patent numberCA 2220573 C
Classification (IPC)H04Q9/00 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedMay 23, 1996Patent grantedSep 12, 2000Term endedMay 23, 2016

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