FR601707A - Improvements to telephone receivers - Google Patents

Improvements to telephone receivers

Info

Publication number
FR601707A
FR601707A FR601707DA FR601707A FR 601707 A FR601707 A FR 601707A FR 601707D A FR601707D A FR 601707DA FR 601707 A FR601707 A FR 601707A
Authority
FR
France
Prior art keywords
telephone receivers
receivers
telephone
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.)
ELECTRO BOBINAGE L
Original Assignee
ELECTRO BOBINAGE L
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 ELECTRO BOBINAGE L filed Critical ELECTRO BOBINAGE L
Application granted granted Critical
Publication of FR601707A publication Critical patent/FR601707A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR601707D 1925-08-06 1925-08-06 Improvements to telephone receivers Expired FR601707A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR601707T 1925-08-06

Publications (1)

Publication Number Publication Date
FR601707A true FR601707A (en) 1926-03-06

Family

ID=8971453

Family Applications (1)

Application Number Title Priority Date Filing Date
FR601707D Expired FR601707A (en) 1925-08-06 1925-08-06 Improvements to telephone receivers

Country Status (1)

Country Link
FR (1) FR601707A (en)

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