FR39415E - Improvements to electronic discharge amplifying devices - Google Patents

Improvements to electronic discharge amplifying devices

Info

Publication number
FR39415E
FR39415E FR39415DA FR39415E FR 39415 E FR39415 E FR 39415E FR 39415D A FR39415D A FR 39415DA FR 39415 E FR39415 E FR 39415E
Authority
FR
France
Prior art keywords
amplifying devices
electronic discharge
discharge amplifying
electronic
devices
Prior art date
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.)
Expired
Application number
Other languages
French (fr)
Inventor
John Hays Hammond Jr
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US406571A external-priority patent/US1979035A/en
Priority claimed from US409211A external-priority patent/US1979036A/en
Application filed filed Critical
Application granted granted Critical
Publication of FR39415E publication Critical patent/FR39415E/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/04—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having discharge tubes
    • H03G9/10—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having discharge tubes for tone control and volume expansion or compression
FR39415D 1929-11-12 1930-11-22 Improvements to electronic discharge amplifying devices Expired FR39415E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US406571A US1979035A (en) 1929-11-12 1929-11-12 Automatic monitoring system
US409211A US1979036A (en) 1929-11-23 1929-11-23 Monitoring system for push-pull amplifiers

Publications (1)

Publication Number Publication Date
FR39415E true FR39415E (en) 1931-10-19

Family

ID=31997674

Family Applications (1)

Application Number Title Priority Date Filing Date
FR39415D Expired FR39415E (en) 1929-11-12 1930-11-22 Improvements to electronic discharge amplifying devices

Country Status (2)

Country Link
FR (1) FR39415E (en)
GB (1) GB367056A (en)

Also Published As

Publication number Publication date
GB367056A (en) 1932-02-18

Similar Documents

Publication Publication Date Title
FR712233A (en) Improvements to electronic discharge devices
FR707999A (en) Improvements to electronic discharge amplifying devices
FR603584A (en) Improvements to electronic discharge devices
FR691248A (en) Improvements to electronic discharge tubes
FR666678A (en) Improvements to thermionic discharge devices
FR699781A (en) Improvements to electronic discharge amplifiers
FR39415E (en) Improvements to electronic discharge amplifying devices
FR40808E (en) Improvements to electronic discharge tubes
FR704615A (en) Improvements to electronic discharge tubes
FR641413A (en) Improvements to electronic discharge devices
FR688521A (en) Improvements to electronic discharge devices
FR734074A (en) Improvements to electronic discharge devices
FR687327A (en) Improvements relating to electronic discharge devices
FR31070E (en) Improvements to electronic discharge devices
FR613397A (en) Improvements to electronic discharge devices
FR608532A (en) Improvements to electronic discharge devices
FR611996A (en) Improvements to electronic discharge devices
FR684334A (en) Improvements to electronic discharge devices
FR662123A (en) Improvements to electronic discharge devices
FR697050A (en) Improvements to electrionic discharge devices
FR726406A (en) Improvements to electronic discharge devices
FR720301A (en) Improvements to electronic discharge devices
FR612333A (en) Improvements to electronic discharge devices
FR32234E (en) Improvements to electronic discharge devices
FR602556A (en) Improvements to electronic discharge devices