FR2166238A1 - - Google Patents

Info

Publication number
FR2166238A1
FR2166238A1 FR7200003A FR7200003A FR2166238A1 FR 2166238 A1 FR2166238 A1 FR 2166238A1 FR 7200003 A FR7200003 A FR 7200003A FR 7200003 A FR7200003 A FR 7200003A FR 2166238 A1 FR2166238 A1 FR 2166238A1
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.)
Pending
Application number
FR7200003A
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.)
DUDOGNON JEAN PIERRE
Original Assignee
DUDOGNON JEAN PIERRE
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 DUDOGNON JEAN PIERRE filed Critical DUDOGNON JEAN PIERRE
Priority to FR7200003A priority Critical patent/FR2166238A1/fr
Publication of FR2166238A1 publication Critical patent/FR2166238A1/fr
Pending 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR7200003A 1972-01-03 1972-01-03 Pending FR2166238A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7200003A FR2166238A1 (zh) 1972-01-03 1972-01-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7200003A FR2166238A1 (zh) 1972-01-03 1972-01-03

Publications (1)

Publication Number Publication Date
FR2166238A1 true FR2166238A1 (zh) 1973-08-17

Family

ID=9091424

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7200003A Pending FR2166238A1 (zh) 1972-01-03 1972-01-03

Country Status (1)

Country Link
FR (1) FR2166238A1 (zh)

Similar Documents

Publication Publication Date Title
JPS522979B2 (zh)
JPS498899A (zh)
FR2193613B1 (zh)
CS155480B1 (zh)
JPS4968559U (zh)
JPS4966785A (zh)
JPS5228752B2 (zh)
JPS5111715Y2 (zh)
JPS5138811Y2 (zh)
CS157424B1 (zh)
CS155025B1 (zh)
CS150474B1 (zh)
CS151678B1 (zh)
CS152530B1 (zh)
CS152950B1 (zh)
CS154508B1 (zh)
CS154826B1 (zh)
CS151391B1 (zh)
JPS4890578U (zh)
CS163974B1 (zh)
CS160894B1 (zh)
CS160844B1 (zh)
CS157576B1 (zh)
CS157425B1 (zh)
CS151865B1 (zh)