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Expired Canadian patentCanada

Dispenser for metering dental compositions

CA 1213570 A · Owner: Espe Dental Ag · Inventors: Herold, Wolf-Dietrich; Neumeister, Alexander

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A Dispenser for Metering Dental Compositions ABSTRACT OF THE DISCLOSURE, A one-hand operated dispenser for metering dental compositions comprises a casing for accomodating the dental composition between a forward dispensing opening and a plunger which is slidable within the casing. The plunger is advanced by means of a threaded spindle which engages in a nut mounted at the casing rear end so as to be secured against rotation and axial displacement. The casing rear end is rotatably supported within a sleeve which in turn is detachably inserted in a handle. The sleeve is formed with an axially extending slot through which a finger is visible which is disposed at the rear end of the spindle. …

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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 November 4, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 4, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 11, 1983
GrantedNovember 4, 1986
Term endedNovember 4, 2003
Patent numberCA 1213570 A
Classification (IPC)B65D83/00 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedOct 11, 1983Patent grantedNov 4, 1986Term endedNov 4, 2003

Sources & verification

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