FR988848A - Improvements to radio stations - Google Patents

Improvements to radio stations

Info

Publication number
FR988848A
FR988848A FR988848DA FR988848A FR 988848 A FR988848 A FR 988848A FR 988848D A FR988848D A FR 988848DA FR 988848 A FR988848 A FR 988848A
Authority
FR
Grant status
Grant
Patent type
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)
Inventor
Olivier De Santis
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
Grant date

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
FR988848A 1944-01-20 1944-01-20 Improvements to radio stations Expired FR988848A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR988848T 1944-01-20

Publications (1)

Publication Number Publication Date
FR988848A true FR988848A (en) 1951-08-31

Family

ID=9539774

Family Applications (1)

Application Number Title Priority Date Filing Date
FR988848A Expired FR988848A (en) 1944-01-20 1944-01-20 Improvements to radio stations

Country Status (1)

Country Link
FR (1) FR988848A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075666B (en) *
EP0116421A1 (en) * 1983-02-04 1984-08-22 George P. Sadorus Reflective audio assembly and picture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075666B (en) *
EP0116421A1 (en) * 1983-02-04 1984-08-22 George P. Sadorus Reflective audio assembly and picture
US4541188A (en) * 1983-02-04 1985-09-17 Talkies International Corp. Reflective audio assembly and picture

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