Draft control arrangement for combustion apparatus
CA 1075086 A · Owner: Diermayer, Werner · Inventors: Diermayer, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TO ALL WHOM IT MAY CONCERN:, BE IT KNOWN that I WERNER DIERMAYER, a, citizen of the United States of America residing in, the City of Lafayette, County of Contra Costa State of, California, have invented certain new and useful improvements in, DRAFT CONTROL ARRANGEMENT FOR COMBUSTION APPARATUS of which the following is the specification. Abstract of the Disclosure The combustion gases of a burner in a heating furnace are discharged to a vent through a draft hood having three ports. The first and second ports communicate with the furnace and the vent respectively and define a first flow path for combustion gases through the chamber of the hood. The third port is open to the ambient …
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 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 8, 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.
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.