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Expired Canadian patentCanada

Aerial planting method and apparatus

CA 908507 A · Owner: Canadian Patents And Development Limited · Inventors: Gartshore, Ian S.; Walters, John

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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No Claude kit for weapons

Claude doesn't help design weapons, ammunition or explosives, so this page has no Reinvent kit. To develop this one, work with a federally licensed manufacturer (many of these items are regulated) and a registered patent attorney or agent, listed on the USPTO roster.

Read the whole patent

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.

Why it's free to use

  • Granted August 29, 1972. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 29, 1989.
  • 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 24, 1970
GrantedAugust 29, 1972
Term endedAugust 29, 1989
Patent numberCA 908507 A
Classification (IPC)F42B25/00 +2 more

Timeline

Timeline From CIPO dates

1971197319751977197919811983198519871989Application filedSep 24, 1970Patent grantedAug 29, 1972Term endedAug 29, 1989

Sources & verification

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