Event communication system
CA 2254161 A1 · Owner: Scrivens, Dean · Inventors: Christiansen, Neil; Scrivens, Dean
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for receiving a radio signal broadcast for a specific event such as a sporting contest, music concert, or other event attended by multiple persons. A portable, base having a clip is attached to a fixed frequency receiver for detecting a broadcast radio, signal, and a speaker for generating an audible signal can be attached to the base or to a, portable speaker. The receiver can be activated by a manual switch or by a broadcast, activation signal. The base has a substantially flat surface for displaying printed images, and a perimeter edge for the base can have a recognizable shape. The system includes a, transmitter for broadcasting the signal and a code mechanism can prevent …
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 November 16, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 16, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 2020.
- 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.