US PATENT SUBCLASS 333 / 24.1
.~ Nonreciprocal gyromagnetic type (e.g., directional phase shifters)

Current as of: June, 1999
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333 /   HD   WAVE TRANSMISSION LINES AND NETWORKS

24 R  DF  COUPLING NETWORKS {15}
24.1.~ Nonreciprocal gyromagnetic type (e.g., directional phase shifters) {2}
24.2  DF  .~.~> Nonreciprocal attenuators or isolators
24.3  DF  .~.~> Nonreciprocal polarization rotators

DEFINITION

Classification: 333/24.1

(under subclass 24) Networks which include gyromagnetic elements for effecting a nonreciprocal transfer of oscillatory energy from one circuit to another circuit.

(1) Note. See (1) Note under subclass 1.1 above for a

definition of the terms "gyromagnetic" and "nonreciprocal". Many of the patents in this generic subclass 24.1 are directional phase shifters, and relate to networks that shift the phase of energy passing through by different amounts depending on the direction of passage.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1.1, for plural channel nonreciprocal gyromagnetic systems. See also (1) Note above.

138+, for delay networks generally.

202+, for waveguide filters generally. SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing,

300+, for nuclear or electronic induction measuring or testing devices.

330, Amplifiers,

4, 4.8 and 63 for amplifiers using gyromagnetic elements.

455, Telecommunications,

323, for mixers using gyromagnetic elements.