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Expired Canadian patentCanada

Magnetic force orthodontic kit and appliances constructed therefrom

CA 1268357 C · Owner: Blechman, Abraham · Inventors: Blechman, Abraham; Pescatore, Eugene 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

A kit is provided containing magnetic modules attach-, ment wire and a set of gages. The modules are rectangular prismatic formed from a cobalt-samarium alloy covered with a chlori-, nated poly-p-xylene coating or stainless steel and jacketed in stainless steel with orthogonally related passages on opposite sides having rectangular cross sections for receiving with a snug fit the rectangular cross-section attachment wire formed by welding together two lengths of standard edgewise wire. The gages provide means for spacing the modules when the latter are incorporated in an appliance. Appliances are illustrated for accomplishing a variety of orthodontic procedures. The construction of 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 May 1, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 1, 2007.
  • 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 21, 1986
GrantedMay 1, 1990
Term endedMay 1, 2007
Patent numberCA 1268357 C
Classification (IPC)A61C7/00 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedJan 21, 1986Patent grantedMay 1, 1990Term endedMay 1, 2007

Sources & verification

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