.~.~> Disk seal tube (e.g., lighthouse, pencil tube)
DEFINITION
Classification: 331/97
(under subclass 96) Subject matter wherein the oscillator includes a frequency determining network comprising a hollow conductive structure, such as a coaxial line resonator or a cavity type resonator, and wherein the active element of the oscillator is effectively enclosed thereby.
SEE OR SEARCH THIS CLASS, SUBCLASS:
67, for oscillators that include an electromagnetic or electrostatic shield which may enclose the active element of the oscillator and wherein the shield is not the frequency determining network or resonator of the oscillator.
68+, wherein the oscillator is enclosed by an outer casing or housing which casing or housing is not the frequency determining network or resonator of the oscillator.
SEE OR SEARCH CLASS
315, Electric Lamp and Discharge Devices: Systems, 39, for the combination of a space discharge device with a distributed parameter transmission line and wherein the line may enclose the space discharge device.
