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Expired Canadian patentCanada

Portable electric fan assembly

CA 1333479 C · Owner: Tettenborn, Michael · Inventors: Tettenborn, Michael; Hutter, Frank; Heidolph, Hans

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 portable electric fan assembly, comprises a base member a, fan head, an upstanding neck portion extending from said base member and carrying said fan head, a fan blade assembly mounted on a fan blade shaft extending into said fan head a, drive shaft coupled to said motor and extending at an angle to said drive shaft, and a coupling device for connecting the fan blade shaft to the drive shaft.

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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 December 13, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 13, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 9, 1989
GrantedDecember 13, 1994
Term endedDecember 13, 2011
Patent numberCA 1333479 C
Classification (IPC)F04D25/10 +1 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedJune 9, 1989Patent grantedDec 13, 1994Term endedDec 13, 2011

Sources & verification

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