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Expired Canadian patentCanada

Seed meter seed tube

CA 1285184 C · Owner: Olson, Jay Harold · Inventors: Olson, Jay Harold

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

Abstract of the Disclosure A seed meter for metering individual seeds at a controlled rate into a furrow in the ground over which the seed meter is traveling releases the individual seeds into a hollow, elongated seed tube. The seed tube is curved along the length thereof in a direction opposite the direction of travel of the seed meter over the ground to release the seeds with a horizontal velocity generally equal and compensate for the motion of the seed opposite that of the seed meter. This enables each seed to reach the ground with little or no velocity component in the horizontal direction thereby, miniminzing lateral seed bounce on the ground. Seed bounce within the seed tube is …

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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 June 25, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2008.
  • 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 30, 1986
GrantedJune 25, 1991
Term endedJune 25, 2008
Patent numberCA 1285184 C
Classification (IPC)A01C7/20 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJan 30, 1986Patent grantedJune 25, 1991Term endedJune 25, 2008

Sources & verification

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