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Expired Canadian patentCanada

Arrangement for distribution of clock signals

CA 1093178 A · Owner: Telefonaktiebolaget Lm Ericsson · Inventors: Roos, Sture G.

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 invention provides an arrangement for transmission of certain clock signals in a series of clock signals by means of signals of lower frequency compared to the frequency of said series of clock signals. From said signals of lower frequency well-defined pulses are extracted for controlling logic equipments located distantly from the clock pulse source. The arrangement includes at the sender side a clock pulse generator producing said series of clock signals, a counter which is stepped by said series of clock pulses and produces at least two relatively, to each other phase displaced pulse series where the length of, the pulses of said pulse series is a multiple of the length of the pulses …

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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 January 6, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 6, 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.
FiledOctober 7, 1977
GrantedJanuary 6, 1981
Term endedJanuary 6, 1998
Patent numberCA 1093178 A
Classification (IPC)H04L25/20 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedOct 7, 1977Patent grantedJan 6, 1981Term endedJan 6, 1998

Sources & verification

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