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Expired Canadian patentCanada

Device for measuring flow

CA 1323510 C · Owner: Nomix Manufacturing Company Limited · Inventors: Gill, David Charles

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

Fluid delivery equipment for example for, distributing herbicide is calibrated to provide a, correct flow rate by performing a test cycle in which the fluid flows into a measuring device for a predetermined time, after which the volume of fluid in the measuring device is established to determine whether or not the flow rate corresponds to the desired flow rate. The measuring device establishes a flow path having two reverse bends (36, 30) with the reverse bend (36) bypassed by a vent hole (32). The level of liquid in the measuring device after a test is for, example, established by means of a graduated scale provided on a card (40) which is removably attached to a package containing the …

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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 26, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 26, 2010.
  • 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 1, 1989
GrantedOctober 26, 1993
Term endedOctober 26, 2010
Patent numberCA 1323510 C
Classification (IPC)G01F25/00 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedSep 1, 1989Patent grantedOct 26, 1993Term endedOct 26, 2010

Sources & verification

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