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Expired Canadian patentCanada

Spraying equipment

CA 1300570 C · Owner: Nomix Manufacturing Co. Limited · Inventors: Gill, David Charles

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 spraying head for spraying material such as herbicides comprising a rotary distribution member and a body made up of a housing and a cap which is rotatable on the housing. The housing has a projection which projects into an aperture in the cap to define an annular gap. The housing and the cap also define an annular cavity into which material is introduced in use the material then flowing to the member through the gap. Means utilizing rotation of the cap on he housing is, provided for adjusting the flowrate of material to the distribution member.

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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 May 12, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 18, 1985
GrantedMay 12, 1992
Term endedMay 12, 2009
Patent numberCA 1300570 C
Classification (IPC)B05B3/10 +1 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedMarch 18, 1985Patent grantedMay 12, 1992Term endedMay 12, 2009

Sources & verification

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