Automatic tympanometric testing means
CA 1136751 A · Owner: Electric Audio Dynamics, Inc. · Inventors: Klar, Irwin; Keller, James E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved tymyanometric testing means is described for automatically testing the status of the middle ear. The testing unit provides a recording on a chart showing a change in the compliance of the middle ear during change of the air pressure in the externa ear. The tympanometric test unit operates automatically as the clinician inserts the test probe into the patient's ear. The unit automatically determines that the probe is in an unblocked condition and that the test probe tone is at a proper intensity relative to the ear canal volume. When these conditions are met and the ear canal pressure at the probe reaches the predetermined test start pressure, the unit proceeds with the testing …
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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 November 30, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 30, 1999.
- 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.