FR368090A - Porte-charbon pour microphones - Google Patents

Porte-charbon pour microphones

Info

Publication number
FR368090A
FR368090A FR368090A FR368090DA FR368090A FR 368090 A FR368090 A FR 368090A FR 368090 A FR368090 A FR 368090A FR 368090D A FR368090D A FR 368090DA FR 368090 A FR368090 A FR 368090A
Authority
FR
France
Prior art keywords
carbon holder
microphone carbon
microphone
holder
carbon
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
FR368090A
Other languages
English (en)
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.)
NAUTISKA INSTR AB
Original Assignee
NAUTISKA INSTR AB
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 NAUTISKA INSTR AB filed Critical NAUTISKA INSTR AB
Application granted granted Critical
Publication of FR368090A publication Critical patent/FR368090A/fr
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
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/021—Microphones with granular resistance material

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
FR368090A 1906-01-03 1906-07-16 Porte-charbon pour microphones Expired FR368090A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE368090X 1906-01-03

Publications (1)

Publication Number Publication Date
FR368090A true FR368090A (fr) 1906-11-16

Family

ID=5719890

Family Applications (1)

Application Number Title Priority Date Filing Date
FR368090A Expired FR368090A (fr) 1906-01-03 1906-07-16 Porte-charbon pour microphones

Country Status (2)

Country Link
DE (1) DE186364C (enrdf_load_stackoverflow)
FR (1) FR368090A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE186364C (enrdf_load_stackoverflow)

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