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Expired Canadian patentCanada

Shovel, in particular a leveling shovel

CA 1331091 C · Owner: Langhorst, Heinz · Inventors: Langhorst, Heinz

CIPO record

Overview

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

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Abstract From the Canadian patent

in conjunction with Fig. 1) In the leveling of planes for paving work lawns, sports grounds, gardens or cultivated plots and the like work is nowadays normally carried out manually on account of the high costs of special machines. A leveling shovel (10) is proposed which has an implement carrier (31) for fixing to any available vehicle {bulldozer wheeled, loader or the like). The leveling shovel (10) has a shovel blade (19), which is essentially perpendicular to the traveling direction, as well as a shovel base (15) adjacent to the shovel blade (19), and shovel side walls (17). The shovel blade (19) is here arranged so as to be movable relative to the shovel base (15) in such a way that it …

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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 August 2, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 2, 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.
FiledSeptember 6, 1989
GrantedAugust 2, 1994
Term endedAugust 2, 2011
Patent numberCA 1331091 C
Classification (IPC)E02F3/81 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedSep 6, 1989Patent grantedAug 2, 1994Term endedAug 2, 2011

Sources & verification

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