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Expired Canadian patentCanada

Electromedical device for the acceptance and processing of electric physiological signals

CA 1110711 A · Owner: Siemens Aktiengesellschaft · Inventors: Wolf, Herbert; Welker, Manfred

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

In an exemplary embodiment a multiplexer unit is arranged in the first device unit in the input channels for electric physiological signals and a demultiplexer unit is arranged in the second device unit on the side of the output channels for the time-shared scanning of the signals in the input or, respectively, output channel; and a pulse amplitude modulator and a single galvanically separating coupling location are inserted in ceries between the multiplexer unit of the first device unit and the demultiplexer unit of the second device unit at the interface between both device units for the de-coupled signal transmission in the time multiplex mode. By this arrangement the minimized number of …

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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 October 13, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 1998.
  • 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 28, 1979
GrantedOctober 13, 1981
Term endedOctober 13, 1998
Patent numberCA 1110711 A
Classification (IPC)G08C15/12 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedMarch 28, 1979Patent grantedOct 13, 1981Term endedOct 13, 1998

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