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Expired Canadian patentCanada

Data transmission system

CA 1304805 C · Owner: Milby, Gregory H. · Inventors: Sanwo, Ikuo J.; Milby, Gregory H.

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

Abstract of the Disclosure A data transmission system for transferring data signals between first and second buses is disclosed. The system includes means attached to the buses for the transfer of data signals to the buses and supply means connected to the buses for precharging the buses to a first voltage level. The system also includes circuit means connecting the buses and responsive to a data signal at a second voltage level on either of said buses for transferring the signal to the other bus.

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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 July 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 2, 1989
GrantedJuly 7, 1992
Term endedJuly 7, 2009
Patent numberCA 1304805 C
Classification (IPC)H04L5/00 +1 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedJune 2, 1989Patent grantedJuly 7, 1992Term endedJuly 7, 2009

Sources & verification

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