FR527036A - Amplificateurs à tubes cathodiques pour l'amplification de courants alternatifs à plusieurs fréquences, tels que les courants télégraphiques
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Amplificateurs à tubes cathodiques pour l'amplification de courants alternatifs à plusieurs fréquences, tels que les courants télégraphiques
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Siemens and Halske AG
Siemens Corp
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Siemens and Halske AG
Siemens Corp
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Application filed by Siemens and Halske AG, Siemens CorpfiledCriticalSiemens and Halske AG
Application grantedgrantedCritical
Publication of FR527036ApublicationCriticalpatent/FR527036A/fr
H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes only
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Engineering & Computer Science
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Power Engineering
(AREA)
Amplifiers
(AREA)
FR527036A1919-12-061920-11-09Amplificateurs à tubes cathodiques pour l'amplification de courants alternatifs à plusieurs fréquences, tels que les courants télégraphiques
ExpiredFR527036A
(fr)