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RADIO INSTR Co Inc
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RADIO INSTR Co Inc
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Application filed by RADIO INSTR Co IncfiledCriticalRADIO INSTR Co Inc
Application grantedgrantedCritical
Publication of FR560281ApublicationCriticalpatent/FR560281A/fr
H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
H01F21/00—Variable inductances or transformers of the signal type
H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
H01F21/04—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by relative movement of turns or parts of windings
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Engineering & Computer Science
(AREA)
Power Engineering
(AREA)
FR560281D1922-11-281922-11-28Perfectionnements apportés aux amplificateurs à tubes d'électrons pour oscillations à radio-fréquence
ExpiredFR560281A
(fr)