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Expired Canadian patentCanada

Dihedral aerodynamic structure

CA 1079248 A · Owner: Kulik, Donald A. · Inventors: Kulik, Donald A.

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

The specification describes an aerodynamic structure having lift for use on an aerodyne. The structure comprises first and second essentially identical planar sections hingedly connected at their roots to one another at dihedral angles. The sections are moveable in unison to vary the angle between each section and its transverse axis.

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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 10, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJune 10, 1980
Term endedJune 10, 1997
Patent numberCA 1079248 A
Classification (IPC)A63H27/00 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJune 10, 1980Term endedJune 10, 1997

Sources & verification

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