FR397077A - Parleur à air comprimé - Google Patents

Parleur à air comprimé

Info

Publication number
FR397077A
FR397077A FR397077DA FR397077A FR 397077 A FR397077 A FR 397077A FR 397077D A FR397077D A FR 397077DA FR 397077 A FR397077 A FR 397077A
Authority
FR
France
Prior art keywords
compressed air
air speaker
speaker
compressed
air
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
English (en)
Inventor
Henri-Georges Gentilhomme
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.)
HENRI-GEORGES GENTILHOMME
Original Assignee
HENRI-GEORGES GENTILHOMME
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 HENRI-GEORGES GENTILHOMME filed Critical HENRI-GEORGES GENTILHOMME
Application granted granted Critical
Publication of FR397077A publication Critical patent/FR397077A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR397077D 1908-12-04 1908-12-04 Parleur à air comprimé Expired FR397077A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR397077T 1908-12-04

Publications (1)

Publication Number Publication Date
FR397077A true FR397077A (fr) 1909-04-28

Family

ID=1442171

Family Applications (1)

Application Number Title Priority Date Filing Date
FR397077D Expired FR397077A (fr) 1908-12-04 1908-12-04 Parleur à air comprimé

Country Status (1)

Country Link
FR (1) FR397077A (fr)

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