Cervical-dilation meter
CA 1267530 C · Owner: Parsons, Natan E. · Inventors: Parsons, Natan E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
D91-001, Abstract of the Disclosure, A meter (10) for measuring cervical dilation during labor includes rings (20 and 22) that fit at the bases of the user's fingers (24 and 26). Pivot arms (14 and 16) mount the rings (20 and 22) at one end and a scale and indicator (30) at the other end. Scale indicia indicate the separation of the rings. Ring separation can be translated into the separation of the finger tips and thus into cervical dilation.
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 April 10, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2007.
- 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.