Blood pressure measuring device
CA 2089819 C · Owner: Speidel + Keller Gmbh + Co. Kg · Inventors: Speidel, Blasius
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The shygmomanometer (10) has a cup-shaped case (11) in which a manometer mechanism with dial (13) and pointer is disposed. At its top margin the case (11) is closed by a crystal (25). This primary case (11) is surrounded by a protective case (15) at a specific free distance, while the bottom (18) of the protective housing (15) integrally joins the bottom (16) of the primary case (11). The connection of the compressed air line is performed either through a hole (22) in the bottom (16) of the case (11) or through the case walls. In the latter case, a bridge of material is present in the gap between the wall of the primary case (11) and of the protective case (15) in the area of the hole.
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
- Filed July 19, 1991 and granted July 15, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2013.
- 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.