Dielectric loaded adjustable phase shifting apparatus
CA 1301266 C · Owner: Chang, Donald C.D. · Inventors: Wong, Mon N.; Chang, Donald C.D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An adjustable phase-shifting apparatus for use in shifting the phase of a microwave signal transmitted along a TEM transmission line such as coaxial line whose inner and outer conductors have square crosssections. The apparatus includes a body with an elongated cavity therein which forms part of the outer conductor and a cover attached to the body, which forms at least part of the outer conductor. The cover has at least one pair of elongated openings that provide access to a portion of the cavity. The apparatus also includes a movable member provided with at least one pair of elongated, tapered, dielectric-loaded projections that slidably pass through the elongated openings and are …
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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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
- 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.