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Expired Canadian patentCanada

Passive chevron replicator

CA 1088667 A · Owner: Rockwell International Corporation · Inventors: Tocci, Leonard R.; Oeffinger, Thomas 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

There is described a passive replicator device to be used in magnetic bubble domain systems. The replicator is passive, i.e. does not require an active element such as a current source or the like, and both propagates and replicates bubble domains. In a preferred embodiment the replicator, uses chevron type elements arranged in an appropriate pattern so as to interact with a pair of propagation paths wherein bubble domains are propagated. A bubble in one propagation path is routinely transferred therealong and concurrently, replicated by the instant device into another propagation path. A plurality of elements arranged in juxtaposition to the chevrons assists in controlling the propagation …

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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 28, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 28, 1997.
  • 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 26, 1976
GrantedOctober 28, 1980
Term endedOctober 28, 1997
Patent numberCA 1088667 A
Classification (IPC)G11C11/14 +1 more

Timeline

Timeline From CIPO dates

1977198019831986198919921995Application filedMay 26, 1976Patent grantedOct 28, 1980Term endedOct 28, 1997

Sources & verification

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