Variable airflow hair treatment device
CA 1138510 A · Owner: Bristol-Myers Squibb Company · Inventors: Springer, William E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
III. Abstract:, There is disclosed a new and improved hair treatment device which comprises a fan for blowing air out of the device against a person's hair, a heater for heating the air before it is blown out of the device and a means to control the airflow velocity which means is located at the forward end of the conduit for the heated air. Specifically, the airflow velocity control means is a pair of hinged trap doors disposed within the air conduit which are adjustable with infinite variability between the maximum opening capability of the air outlet in the hair treatment device and the minimum opening. The preferred means for adjusting the opening between the trap doors is a knob …
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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 December 28, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 28, 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.