Stethoscope chestpiece with a sound conveying indexing detent
CA 1302902 C · Owner: Minnesota Mining And Manufacturing Company · Inventors: Grimm, Forrest R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A stethoscope chestpiece has a body member a, tubular shaft, and an indexing detent. The body has a plurality of microphones each of which has a opening at its apex and a central recess. The tubular shaft is rotably secured within the central recess and has an opening in its wall that aligns selectively with one of the openings from the microphones. The sound conveying detent is mounted transversely within the shaft and aligned with the opening in the shaft wall. The indexing detent has a hollow cylindrical element and spring. The hollow cylindrical element has an open bottom and a seat end having an opening. The seat end is beveled and extends beyond the opening in the shaft wall …
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 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.
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.