FR759927A - - Google Patents

Info

Publication number
FR759927A
FR759927A FR759927DA FR759927A FR 759927 A FR759927 A FR 759927A FR 759927D A FR759927D A FR 759927DA FR 759927 A FR759927 A FR 759927A
Authority
FR
France
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)
Publication date
Application granted granted Critical
Publication of FR759927A publication Critical patent/FR759927A/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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/008—Transducers other than those covered by groups H04R9/00 - H04R21/00 using optical signals for detecting or generating sound

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR759927D Expired FR759927A (cg-RX-API-DMAC7.html)

Publications (1)

Publication Number Publication Date
FR759927A true FR759927A (cg-RX-API-DMAC7.html) 1934-02-14

Family

ID=1550985

Family Applications (1)

Application Number Title Priority Date Filing Date
FR759927D Expired FR759927A (cg-RX-API-DMAC7.html)

Country Status (1)

Country Link
FR (1) FR759927A (cg-RX-API-DMAC7.html)

Similar Documents

Publication Publication Date Title
NL40521C (cg-RX-API-DMAC7.html)
FR767643A (cg-RX-API-DMAC7.html)
FR81048A (cg-RX-API-DMAC7.html)
FR760187A (cg-RX-API-DMAC7.html)
FR766854A (cg-RX-API-DMAC7.html)
FR762775A (cg-RX-API-DMAC7.html)
FR767888A (cg-RX-API-DMAC7.html)
FR767873A (cg-RX-API-DMAC7.html)
FR766306A (cg-RX-API-DMAC7.html)
FR43188E (cg-RX-API-DMAC7.html)
BE402957A (cg-RX-API-DMAC7.html)
BE402894A (cg-RX-API-DMAC7.html)
BE403733A (cg-RX-API-DMAC7.html)
BE403408A (cg-RX-API-DMAC7.html)
BE400067A (cg-RX-API-DMAC7.html)
BE401688A (cg-RX-API-DMAC7.html)
BE402225A (cg-RX-API-DMAC7.html)
BE403253A (cg-RX-API-DMAC7.html)
BE403741A (cg-RX-API-DMAC7.html)
BE355850A (cg-RX-API-DMAC7.html)
BE402931A (cg-RX-API-DMAC7.html)
BE403563A (cg-RX-API-DMAC7.html)
BE402710A (cg-RX-API-DMAC7.html)
BE401237A (cg-RX-API-DMAC7.html)
BE402205A (cg-RX-API-DMAC7.html)