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Expired Canadian patentCanada

Switching apparatus for burst-switching communications system

CA 1260586 A · Owner: Gte Laboratories Incorporated · Inventors: Eliscu, Mark; Lenart, Joseph M.; Haselton, E. Fletcher

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Abstract From the Canadian patent

A burst-switching communications system with integrated voice and data services and with processing capacity sufficient to support T1 or higher link transmission rates such system including, a hub switch located at a point of high-traffic concentration in the network and a plurality of link switches. The switches are interconnected by time-division multiplexed communications links. A burst is a variable-length sequence of bits which represents for, example, a block of data or a spurt of voice energy as sensed by silence/voice detectors located at voice ports. Within a communications link, a burst is transmitted one byte at a time in an assigned channel of sequential frames of the …

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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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 14, 1986
GrantedSeptember 26, 1989
Term endedSeptember 26, 2006
Patent numberCA 1260586 A
Classification (IPC)H04Q11/04 +1 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedJuly 14, 1986Patent grantedSep 26, 1989Term endedSep 26, 2006

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