FR704081A - Improvements to control devices, in particular for radio-electric devices - Google Patents

Improvements to control devices, in particular for radio-electric devices

Info

Publication number
FR704081A
FR704081A FR704081DA FR704081A FR 704081 A FR704081 A FR 704081A FR 704081D A FR704081D A FR 704081DA FR 704081 A FR704081 A FR 704081A
Authority
FR
France
Prior art keywords
devices
radio
control devices
electric
electric 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)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sparks Withington Co
Original Assignee
Sparks Withington Co
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
Application filed by Sparks Withington Co filed Critical Sparks Withington Co
Application granted granted Critical
Publication of FR704081A publication Critical patent/FR704081A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/06—Driving or adjusting arrangements; combined with other driving or adjusting arrangements, e.g. of gain control
    • H03J1/10—Rope drive; Chain drive
FR704081D 1929-10-11 1930-10-08 Improvements to control devices, in particular for radio-electric devices Expired FR704081A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US398864A US1871011A (en) 1929-10-11 1929-10-11 Control apparatus for gang condensers

Publications (1)

Publication Number Publication Date
FR704081A true FR704081A (en) 1931-05-11

Family

ID=23577097

Family Applications (1)

Application Number Title Priority Date Filing Date
FR704081D Expired FR704081A (en) 1929-10-11 1930-10-08 Improvements to control devices, in particular for radio-electric devices

Country Status (4)

Country Link
US (1) US1871011A (en)
DE (1) DE583581C (en)
FR (1) FR704081A (en)
GB (1) GB358700A (en)

Also Published As

Publication number Publication date
DE583581C (en) 1933-09-07
GB358700A (en) 1931-10-15
US1871011A (en) 1932-08-09

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