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Expired Canadian patentCanada

Process for the production of elastic manufactured articles for making mattresses and other items, and mattresses made using such process

CA 1194621 A · Owner: Permaflex S.P.A. · Inventors: Santarini, Luigi

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 mattress or similar article includes springs housed in ribbon-shaped members. which form a series of pockets for receiving the springs and are closed at each end to secure the springs in the pockets. Several ribbonshaped members are placed side-by-side and two ribbonshaped flexible layers are connected to opposite sides of the members and glued. to said members to join them together. Single ribbon-shaped members or groups of adjacent ribbon shaped members differ from contiguous members or groups of contiguous members in terms of their elasticity (in addition to the distance separating contiguous members) to impart to the manufactured article differing characteristics in a direction at …

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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 October 1, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 1, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 15, 1983
GrantedOctober 1, 1985
Term endedOctober 1, 2002
Patent numberCA 1194621 A
Classification (IPC)A47C23/00 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMarch 15, 1983Patent grantedOct 1, 1985Term endedOct 1, 2002

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