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Expired Canadian patentCanada

Recompression chamber

CA 1302775 C · Owner: Sands, Robert Lyne · Inventors: Sands, Robert Lyne; Pennefather, John

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

A recompression chamber is disclosed comprising a frusto-conical shell with an end wall closing the base of the shell and having a sealable hatch in the end wall to provide access to the chamber. The chamber may be tilted endwise to vary the position of the patient lying in the chamber. The chamber is dimensioned to accommodate a patient lying down with his feet towards the apex of the shell and an attending medical technician sitting adjacent the sealable hatch. The hatch is also provided with a rotatable bayonet fitting to enable a further chamber to be attached thereto to provide for a transfer under pressure between the chambers.

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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 June 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 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.
FiledMay 21, 1987
GrantedJune 9, 1992
Term endedJune 9, 2009
Patent numberCA 1302775 C
Classification (IPC)B01L1/02 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedMay 21, 1987Patent grantedJune 9, 1992Term endedJune 9, 2009

Sources & verification

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