FR820535A - Loudspeaker system - Google Patents

Loudspeaker system

Info

Publication number
FR820535A
FR820535A FR820535DA FR820535A FR 820535 A FR820535 A FR 820535A FR 820535D A FR820535D A FR 820535DA FR 820535 A FR820535 A FR 820535A
Authority
FR
France
Prior art keywords
loudspeaker system
loudspeaker
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
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.)
GUIDED RADIO CORP
Original Assignee
GUIDED RADIO CORP
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 GUIDED RADIO CORP filed Critical GUIDED RADIO CORP
Application granted granted Critical
Publication of FR820535A publication Critical patent/FR820535A/en
Expired 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
    • H04R27/00—Public address systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR820535D 1936-05-28 1937-04-12 Loudspeaker system Expired FR820535A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82244A US2139006A (en) 1936-05-28 1936-05-28 Public address system

Publications (1)

Publication Number Publication Date
FR820535A true FR820535A (en) 1937-11-13

Family

ID=22169954

Family Applications (1)

Application Number Title Priority Date Filing Date
FR820535D Expired FR820535A (en) 1936-05-28 1937-04-12 Loudspeaker system

Country Status (3)

Country Link
US (1) US2139006A (en)
FR (1) FR820535A (en)
GB (1) GB493846A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433413A (en) * 1944-02-21 1947-12-30 Internat Marine Radio Company Combined radio transmitter and loud-speaker installation
US5345510A (en) * 1992-07-13 1994-09-06 Rauland-Borg Corporation Integrated speaker supervision and alarm system

Also Published As

Publication number Publication date
US2139006A (en) 1938-12-06
GB493846A (en) 1938-10-14

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