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Expired Canadian patentCanada

I.sup.2l circuit for the production of long pulses

CA 1111113 A · Owner: Siemens Aktiengesellschaft · Inventors: Muller, Rudiger

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

A time base circuit feeds a frequency divider via a current amplifier. A current supply circuit is connected to supply the current amplifier and the frequency divider. The current supply may also be connected to supply the time base circuit; otherwise the time base circuit is responsive to electromagnetic radiation for supplying its own current.

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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 20, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 20, 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.
FiledSeptember 16, 1977
GrantedOctober 20, 1981
Term endedOctober 20, 1998
Patent numberCA 1111113 A
Classification (IPC)H03K3/00 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedSep 16, 1977Patent grantedOct 20, 1981Term endedOct 20, 1998

Sources & verification

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