Audio cone module
CA 2394908 A1 · Owner: Rubbermaid Commercial Products Llc · Inventors: Dulaney, Shannon C.; Lauer, Robert W.; Recko, Paul J. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
0048 A safety device, comprising at least one sensor for sensing the presence of an, object and a warning system that emits at least one precreated verbal warning message after the sensor senses an object. The warning system includes a control, system that allows a user to select at least one of a plurality of precreated verbal, warning messages for emission. In another embodiment a safety device , comprises a, safety cone a sensor disposed on the safety cone and that senses an object and a, warning system disposed at the top of the safety cone and that emits at least one, warning signal after the sensor senses an object.
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 July 24, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 24, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 2024.
- 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.