Therapeutic low intensity direct current generator with polarity reversal
CA 1069183 A · Owner: Sybron Corporation · Inventors: Ellis, Franklin H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract A low intensity direct current device for treating skin ulcers, infections and the like by electrotherapy. Therapeutic low intensity direct current is applied to a patient by means of electrodes, at least one of which contains silver. Automatic switching means are provided to reverse the polarity of the direct current from time to time to prevent the accumulation of unwanted materials upon the silver electrode due to electrochemical action.
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 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 1, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.