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DEUTSCHE TELEPHONWERKE GmbH
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DEUTSCHE TELEPHONWERKE GmbH
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Application filed by DEUTSCHE TELEPHONWERKE GmbHfiledCriticalDEUTSCHE TELEPHONWERKE GmbH
Application grantedgrantedCritical
Publication of FR542122ApublicationCriticalpatent/FR542122A/fr
H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
H03B11/00—Generation of oscillations using a shock-excited tuned circuit
FR542122D1920-11-181921-10-10Appareil pour la production de vibrations de haute fréquence, destinées en particulier à la transmilssion de messages
ExpiredFR542122A
(fr)