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Expired Canadian patentCanada

Brewing machine

CA 1295847 C · Owner: Melitta-Werke Bentz & Sohn · Inventors: Hauslein, Reinhard

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

This invention relates to brewing machines for producing tea and coffee. The prior art machines suffer from poor distribution of heated water over the coffee or tea. The brewing machine of this invention comprises a fresh-water container a, continuous-flow heater, an overflow device a filter-vessel, a, liquid container for filtrate and means for moving the aromatic, compound located in the filter-vessel relative to the flow of the water entering the filter-vessel. The means for moving the aromatic compound may comprise a mechanical vibrator which moves the filter vessel or a rotating agitator. Alternatively the, water may be distributed over the aromatic compound by means of a rotating …

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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 February 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 18, 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.
FiledDecember 21, 1987
GrantedFebruary 18, 1992
Term endedFebruary 18, 2009
Patent numberCA 1295847 C
Classification (IPC)A47J31/06 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedDec 21, 1987Patent grantedFeb 18, 1992Term endedFeb 18, 2009

Sources & verification

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