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Expired Canadian patentCanada

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CA 1234920 A · Owner: American Microsystems, Inc. · Inventors: Bauer, Jerry R.

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

Jerry R. Bauer, ABSTRACT A means is provided for encoding and decoding data transmitted by a parallel data bus line (8). An encoding Exclusive-OR gate (23-l through 23-N) is provided for each data transmission lead. One input lead of each encoding Exclusive-OR gate (23-l through 23-N) is connected to the corresponding incoming data transmission lead in order to receive data to be transmitted on accessible data lines (8-l through 8-N). The other input lead of each encoding Exclusive-OR gate (23-l through 23-N) is connected via a code matrix (22) to a source of a random M-bit binary number (21). The output signal provided by each Exclusive-OR gate is the encoded data bit which is applied to …

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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 April 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 5, 2005.
  • 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 21, 1985
GrantedApril 5, 1988
Term endedApril 5, 2005
Patent numberCA 1234920 A
Classification (IPC)G06F12/14 +2 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedMay 21, 1985Patent grantedApril 5, 1988Term endedApril 5, 2005

Sources & verification

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