NL71197C - - Google Patents

Info

Publication number
NL71197C
NL71197C NL71197DA NL71197C NL 71197 C NL71197 C NL 71197C NL 71197D A NL71197D A NL 71197DA NL 71197 C NL71197 C NL 71197C
Authority
NL
Netherlands
Application number
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.)
Publication of NL71197C publication Critical patent/NL71197C/xx

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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
NL71197D 1947-06-18 NL71197C (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US755397A US2506624A (en) 1947-06-18 1947-06-18 Electroacoustic transducer

Publications (1)

Publication Number Publication Date
NL71197C true NL71197C (en:Method)

Family

ID=25038963

Family Applications (1)

Application Number Title Priority Date Filing Date
NL71197D NL71197C (en:Method) 1947-06-18

Country Status (6)

Country Link
US (1) US2506624A (en:Method)
BE (1) BE481098A (en:Method)
DE (1) DE813164C (en:Method)
FR (1) FR963471A (en:Method)
GB (1) GB653923A (en:Method)
NL (1) NL71197C (en:Method)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2535757A (en) * 1946-06-25 1950-12-26 John J Root Peripherally driven electroacoustical transducer
US2567365A (en) * 1948-08-04 1951-09-11 Bell Telephone Labor Inc Polarized operator for telephone receivers
US2717096A (en) * 1953-01-23 1955-09-06 Minnis W Henderson Magnet gas tank cap
US4075437A (en) * 1976-07-16 1978-02-21 Bell Telephone Laboratories, Incorporated Composition, processing and devices including magnetic alloy
US4174983A (en) * 1978-07-13 1979-11-20 Bell Telephone Laboratories, Incorporated Fe-Cr-Co magnetic alloy processing
US4258234A (en) * 1979-08-24 1981-03-24 Bell Telephone Laboratories, Incorporated Electroacoustic device
US4311537A (en) * 1980-04-22 1982-01-19 Bell Telephone Laboratories, Incorporated Low-cobalt Fe-Cr-Co permanent magnet alloy processing
US4443667A (en) * 1982-01-11 1984-04-17 Bell Telephone Laboratories, Incorporated Electromagnetic transducer
US4425482A (en) 1982-03-08 1984-01-10 Western Electric Company Ring armature electroacoustic transducer
NL8602719A (nl) * 1986-10-29 1988-05-16 Philips Nv Trillingsmotor.
DE3819771A1 (de) * 1987-12-18 1989-07-06 Karl Scheffer Klute Gmbh & Co Handluftpumpe fuer zweiradreifen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1228639A (en) * 1914-03-27 1917-06-05 Erik Christian Bayer Sound-producing device.
US1579605A (en) * 1925-10-17 1926-04-06 Gavin Percy Radio amplifying receiver
US1895071A (en) * 1928-09-25 1933-01-24 Herman J Fanger Dynamic loud speaker unit
BE401119A (en:Method) * 1931-02-12
US2170571A (en) * 1936-08-12 1939-08-22 Bell Telephone Labor Inc Acoustic device
US2249160A (en) * 1939-05-19 1941-07-15 Bell Telephone Labor Inc Acoustic device
US2395166A (en) * 1942-12-24 1946-02-19 Astatic Corp Transducer

Also Published As

Publication number Publication date
GB653923A (en) 1951-05-30
BE481098A (en:Method)
US2506624A (en) 1950-05-09
DE813164C (de) 1951-09-10
FR963471A (en:Method) 1950-07-11

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