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Expired Canadian patentCanada

Portable vacuum pump for desoldering purposes

CA 1297736 C · Owner: Dallons, Robert E. · Inventors: Fortune, William S.; Dallons, Robert E.

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 vacuum pump for desoldering purposes comprising a spring guide (10) a single, spring (12) extending longitudinally within said spring guide, said spring guide being open along its entire length and having an outwardly turned portion on opposite edges, a loading knob having inwardly turned edges to ride along said outwardly turned portions of said spring guide, a plunger shaft disposed within said spring and including said loading knob secured thereto, a trigger housing (10) having means including a trigger for passing said plunger therethrough and for automatically moving said trigger sideways for loading it, a barrel (25) having means for screwing it to said trigger housing, …

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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 March 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
  • 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 28, 1985
GrantedMarch 24, 1992
Term endedMarch 24, 2009
Patent numberCA 1297736 C
Classification (IPC)B23K1/00 +1 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedJune 28, 1985Patent grantedMarch 24, 1992Term endedMarch 24, 2009

Sources & verification

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