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Expired Canadian patentCanada

Integrated sewage treatment system

CA 1106129 A · Owner: Nealy, Robert H. · Inventors: Nealy, Robert H.

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

An on-site system in which means for treating domestic sewage generated within a building located thereon are totally integrated with means for modifying space temperatures and for heating water for sanitary and other purposes therein to form a matrix of interrelated and interdependent functions acting together to deliver only non-polluting products to the environment and to achieve maximal energy conservation.

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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 August 4, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 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.
FiledJanuary 15, 1979
GrantedAugust 4, 1981
Term endedAugust 4, 1998
Patent numberCA 1106129 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedJan 15, 1979Patent grantedAug 4, 1981Term endedAug 4, 1998

Sources & verification

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