Electrical power circuit for a vacuum cleaner
CA 2006635 C · Owner: Kubicko, Robert · Inventors: Gerke, Burton E. Jr.; Krasznai, Charles Z.; Kubicko, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is a vacuum cleaner and accessory attachment assembly including a vacuum cleaner and an accessory attachment. The vacuum cleaner includes a motor, housing enclosing the motor and a fan driven by the motor for producing a vacuum. The vacuum cleaner also includes a canister removably attached to the housing for reception of air and foreign matter into the canister in response to the vacuum produced by the fan. The vacuum cleaner further includes a plurality of batteries electrically connected together and electrical wiring interconnecting the batteries and the motor The accessory attachment is removably mounted to the vacuum cleaner and includes a motor and means, for …
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
- Filed December 27, 1989 and granted March 15, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 27, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 27, 2011.
- 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.