Sphygmomanometer
CA 1047273 A · Owner: Speidel, Blasius · Inventors: Speidel, Blasius
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sphygmomanometer, Abstract of Disclosure A Sphygmomanometer including a measuring capillary joined to a mercury storage tank by means of an internal passageway, is provided with a shut-off device for selectively blocking and opening the passageway. The shut-off device has a valve housing including a valve chamber which intersects the passageway and which terminates internally in a valve seat. A locking piece is mounted inside the valve chamber for rectilinear movement, with respect to the valve seat, from a closed position in engagement with the valve seat wherein the passageway is blocked to an open position, removed from the valve seat wherein the passageway is open. The locking piece 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 January 30, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 30, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.