Patent Yard Sign in
Expired Canadian patentCanada

Press for manufacturing stones

CA 1328983 C · Owner: Gebroeders Rook Beheer B.V. · Inventors: Rook, Cornelis; Klein, Willem

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

A press for manufacturing stones is provided with a fixed mould containing a plurality of moulding compartments, and a vertically movable stamp arranged above the mould and a vertically movable table arranged under the mould. At one side of the table at the level of the highest position of the table means are, provided for supplying a moulding plate for supporting products to be shaped during production. The moulding plate has upright ribs which in use, bear, against walls bounding the moulding compartments. The upright ribs have bevelled edges which are sized, shaped and positioned to form chamfers on, corresponding edges of the stones while at the side opposite the mould a conveyor is …

Read the whole patent

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 3, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 3, 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.
FiledAugust 22, 1986
GrantedMay 3, 1994
Term endedMay 3, 2011
Patent numberCA 1328983 C
Classification (IPC)B28B3/02 +1 more

Timeline

Timeline From CIPO dates

198719901993199619992002200520082011Application filedAug 22, 1986Patent grantedMay 3, 1994Term endedMay 3, 2011

Sources & verification

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