GB502595A - Improvements relating to telephonic loud-speaker systems - Google Patents

Improvements relating to telephonic loud-speaker systems

Info

Publication number
GB502595A
GB502595A GB2364738A GB2364738A GB502595A GB 502595 A GB502595 A GB 502595A GB 2364738 A GB2364738 A GB 2364738A GB 2364738 A GB2364738 A GB 2364738A GB 502595 A GB502595 A GB 502595A
Authority
GB
United Kingdom
Prior art keywords
valves
way
amplifier
drop
plate current
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
GB2364738A
Other languages
English (en)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB502595A publication Critical patent/GB502595A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/001—Two-way communication systems between a limited number of parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
GB2364738A 1937-10-26 1938-08-10 Improvements relating to telephonic loud-speaker systems Expired GB502595A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR837339T 1937-10-26

Publications (1)

Publication Number Publication Date
GB502595A true GB502595A (en) 1939-03-21

Family

ID=6545929

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2364738A Expired GB502595A (en) 1937-10-26 1938-08-10 Improvements relating to telephonic loud-speaker systems

Country Status (3)

Country Link
BE (1) BE430779A (enrdf_load_stackoverflow)
FR (1) FR837339A (enrdf_load_stackoverflow)
GB (1) GB502595A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE430779A (enrdf_load_stackoverflow) 1938-11-30
FR837339A (fr) 1939-02-08

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