FR661981A - Improvements to electrical transmission systems - Google Patents

Improvements to electrical transmission systems

Info

Publication number
FR661981A
FR661981A FR661981DA FR661981A FR 661981 A FR661981 A FR 661981A FR 661981D A FR661981D A FR 661981DA FR 661981 A FR661981 A FR 661981A
Authority
FR
France
Prior art keywords
transmission systems
electrical transmission
electrical
systems
transmission
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Application granted granted Critical
Publication of FR661981A publication Critical patent/FR661981A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/02—Manually-operated control
    • H03G3/04—Manually-operated control in untuned amplifiers
    • H03G3/06—Manually-operated control in untuned amplifiers having discharge tubes
FR661981D 1927-10-21 1928-10-10 Improvements to electrical transmission systems Expired FR661981A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US661981XA 1927-10-21 1927-10-21

Publications (1)

Publication Number Publication Date
FR661981A true FR661981A (en) 1929-08-01

Family

ID=22067900

Family Applications (1)

Application Number Title Priority Date Filing Date
FR661981D Expired FR661981A (en) 1927-10-21 1928-10-10 Improvements to electrical transmission systems

Country Status (1)

Country Link
FR (1) FR661981A (en)

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