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Expired Canadian patentCanada

Extremity compression device for limbs

CA 1113330 A · Owner: Kendall Company (The) · Inventors: Memhardt, Charles R.; Dye, John F.

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 device for applying compressive pressures against a patient's limb from a source of pressurized fluid comprising, an elongated pressure sleeve for enclosing a length of the patient's limb. The sleeve has a plurality of separate fluid pressure chambers progressively arranged longitudinally along the sleeve from a lower portion of the limb to an upper portion of the limb proximal the patient's heart relative the lower portion. The device has means for filling the chambers from the source during periodic compression cycles while applying a greater pressure in each lower chamber than the pressure in any upper chamber to apply a compressive pressure gradient against the patient's limb by the …

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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 December 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 1, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 19, 1976
GrantedDecember 1, 1981
Term endedDecember 1, 1998
Patent numberCA 1113330 A
Classification (IPC)A61H1/00 +2 more

Timeline

Timeline From CIPO dates

19771980198319861989199219951998Application filedOct 19, 1976Patent grantedDec 1, 1981Term endedDec 1, 1998

Sources & verification

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