FR742764A - - Google Patents

Info

Publication number
FR742764A
FR742764A FR742764DA FR742764A FR 742764 A FR742764 A FR 742764A FR 742764D A FR742764D A FR 742764DA FR 742764 A FR742764 A FR 742764A
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 FR742764A publication Critical patent/FR742764A/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
    • H04R29/00—Monitoring arrangements; Testing arrangements

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR742764D Expired FR742764A (cg-RX-API-DMAC7.html)

Publications (1)

Publication Number Publication Date
FR742764A true FR742764A (cg-RX-API-DMAC7.html) 1933-03-15

Family

ID=1547120

Family Applications (1)

Application Number Title Priority Date Filing Date
FR742764D Expired FR742764A (cg-RX-API-DMAC7.html)

Country Status (1)

Country Link
FR (1) FR742764A (cg-RX-API-DMAC7.html)

Similar Documents

Publication Publication Date Title
FR743179A (cg-RX-API-DMAC7.html)
FR741686A (cg-RX-API-DMAC7.html)
FR741230A (cg-RX-API-DMAC7.html)
FR742611A (cg-RX-API-DMAC7.html)
FR743319A (cg-RX-API-DMAC7.html)
FR741547A (cg-RX-API-DMAC7.html)
FR742783A (cg-RX-API-DMAC7.html)
FR742602A (cg-RX-API-DMAC7.html)
FR742695A (cg-RX-API-DMAC7.html)
FR741510A (cg-RX-API-DMAC7.html)
FR742772A (cg-RX-API-DMAC7.html)
BE395128A (cg-RX-API-DMAC7.html)
BE378380A (cg-RX-API-DMAC7.html)
BE395422A (cg-RX-API-DMAC7.html)
BE406076A (cg-RX-API-DMAC7.html)
BE395039A (cg-RX-API-DMAC7.html)
BE395192A (cg-RX-API-DMAC7.html)
BE391463A (cg-RX-API-DMAC7.html)
BE375476A (cg-RX-API-DMAC7.html)
BE394933A (cg-RX-API-DMAC7.html)
BE395431A (cg-RX-API-DMAC7.html)
BE389595A (cg-RX-API-DMAC7.html)
BE393645A (cg-RX-API-DMAC7.html)
BE393793A (cg-RX-API-DMAC7.html)
BE394347A (cg-RX-API-DMAC7.html)