FR2345045B1 - - Google Patents

Info

Publication number
FR2345045B1
FR2345045B1 FR7607946A FR7607946A FR2345045B1 FR 2345045 B1 FR2345045 B1 FR 2345045B1 FR 7607946 A FR7607946 A FR 7607946A FR 7607946 A FR7607946 A FR 7607946A FR 2345045 B1 FR2345045 B1 FR 2345045B1
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
FR7607946A
Other languages
French (fr)
Other versions
FR2345045A1 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7607946A priority Critical patent/FR2345045A1/fr
Publication of FR2345045A1 publication Critical patent/FR2345045A1/fr
Application granted granted Critical
Publication of FR2345045B1 publication Critical patent/FR2345045B1/fr
Granted 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/565—Screens allowing free passage of sound
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H04R9/063—Loudspeakers using a plurality of acoustic drivers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Transforming Electric Information Into Light Information (AREA)
FR7607946A 1976-03-19 1976-03-19 Ecran cinematographique sonore Granted FR2345045A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7607946A FR2345045A1 (fr) 1976-03-19 1976-03-19 Ecran cinematographique sonore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7607946A FR2345045A1 (fr) 1976-03-19 1976-03-19 Ecran cinematographique sonore

Publications (2)

Publication Number Publication Date
FR2345045A1 FR2345045A1 (fr) 1977-10-14
FR2345045B1 true FR2345045B1 (enrdf_load_stackoverflow) 1981-08-21

Family

ID=9170664

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7607946A Granted FR2345045A1 (fr) 1976-03-19 1976-03-19 Ecran cinematographique sonore

Country Status (1)

Country Link
FR (1) FR2345045A1 (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR2345045A1 (fr) 1977-10-14

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Legal Events

Date Code Title Description
ST Notification of lapse