Compact waveguide "t" switch
CA 2299641 C · Owner: Boeing Electron Dynamic Devices, Inc. · Inventors: Ando, Michael N.; Kich, Rolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compact "T" switch for use in a waveguide communication system switch includes a housing a rotor, and a motor. The housing includes a pair of ends and an interconnecting sidewall enclosing a cylindrical cavity. One of the housing ends including an entry port and the sidewall includes a plurality circumferentially spaced exit ports. The rotor is rotatably disposed within the housing cylindrical cavity and includes an input end having an input port aligned with the housing entry port and an outer surface having a plurality of output ports for alignment with the housing exit ports. The rotor includes a primary or first passage connecting the input port to one of the output ports and further …
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 February 28, 2000 and granted October 8, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 28, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 28, 2022.
- 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.