FR442658A - Device applicable to microphones - Google Patents

Device applicable to microphones

Info

Publication number
FR442658A
FR442658A FR442658DA FR442658A FR 442658 A FR442658 A FR 442658A FR 442658D A FR442658D A FR 442658DA FR 442658 A FR442658 A FR 442658A
Authority
FR
France
Prior art keywords
microphones
device applicable
applicable
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of FR442658A publication Critical patent/FR442658A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR442658D 1911-05-11 1912-04-18 Device applicable to microphones Expired FR442658A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE442658X 1911-05-11

Publications (1)

Publication Number Publication Date
FR442658A true FR442658A (en) 1912-09-06

Family

ID=1483807

Family Applications (1)

Application Number Title Priority Date Filing Date
FR442658D Expired FR442658A (en) 1911-05-11 1912-04-18 Device applicable to microphones

Country Status (1)

Country Link
FR (1) FR442658A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967081C (en) * 1951-04-06 1957-10-03 Fernsprech U Signalbaugesellsc Microphone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967081C (en) * 1951-04-06 1957-10-03 Fernsprech U Signalbaugesellsc Microphone

Similar Documents

Publication Publication Date Title
FR442658A (en) Device applicable to microphones
CH56864A (en) Drawing device
FR426637A (en) Recording device applicable to telephone sets
FR435874A (en) Improvements to pacifiers
FR431789A (en) Fumivorous device
FR436235A (en) Fumivorous device
FR425182A (en) Improvements to kinetoscopes
FR428252A (en) Improvements to cinematographs
FR445975A (en) Improvements made to reels
CH61585A (en) Train cover device
CH61588A (en) Train cover device
FR437425A (en) Hydraulic device
FR437697A (en) Improvements to filtering devices
FR425595A (en) Improvements to phonographs
FR452223A (en) Improvements made to spherometers
FR427638A (en) Improvements to taximeters
FR434961A (en) Improvements to telescopes
CH54830A (en) Passing device
FR429927A (en) Improvements to tachometers
FR434060A (en) Improvements to tachometers
FR15109E (en) Carburetor improvements
FR426267A (en) Carburetor improvements
FR430346A (en) Carburetor improvements
FR432424A (en) Improvements to mirrors
FR426930A (en) Cremones refinements