FR2033255B1 - - Google Patents

Info

Publication number
FR2033255B1
FR2033255B1 FR707002099A FR7002099A FR2033255B1 FR 2033255 B1 FR2033255 B1 FR 2033255B1 FR 707002099 A FR707002099 A FR 707002099A FR 7002099 A FR7002099 A FR 7002099A FR 2033255 B1 FR2033255 B1 FR 2033255B1
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
FR707002099A
Other versions
FR2033255A1 (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
Publication of FR2033255A1 publication Critical patent/FR2033255A1/fr
Application granted granted Critical
Publication of FR2033255B1 publication Critical patent/FR2033255B1/fr
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
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/006—Transducers other than those covered by groups H04R9/00 - H04R21/00 using solid state devices

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR707002099A 1969-01-21 1970-01-21 Expired FR2033255B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE00752/69A SE328026B (fr) 1969-01-21 1969-01-21

Publications (2)

Publication Number Publication Date
FR2033255A1 FR2033255A1 (fr) 1970-12-04
FR2033255B1 true FR2033255B1 (fr) 1974-03-01

Family

ID=20257050

Family Applications (1)

Application Number Title Priority Date Filing Date
FR707002099A Expired FR2033255B1 (fr) 1969-01-21 1970-01-21

Country Status (5)

Country Link
US (1) US3639679A (fr)
DE (1) DE2002778B2 (fr)
FR (1) FR2033255B1 (fr)
GB (1) GB1243608A (fr)
SE (1) SE328026B (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907897A (en) * 1956-07-09 1959-10-06 Howard H Sander Pressure transducer
DE1100305B (de) * 1958-09-09 1961-02-23 Siemens Ag Elektromechanischer Wandler nach Art eines Tonabnehmers
US2916639A (en) * 1958-10-30 1959-12-08 Ampex Magnetic transducing device and circuit therefor
US3274406A (en) * 1963-01-31 1966-09-20 Rca Corp Acoustic-electromagnetic device
US3264416A (en) * 1963-05-06 1966-08-02 Gen Telephone & Elect Transducer
FR1567136A (fr) * 1966-12-30 1969-05-16

Also Published As

Publication number Publication date
GB1243608A (en) 1971-08-25
SE328026B (fr) 1970-09-07
DE2002778B2 (de) 1972-01-20
DE2002778A1 (de) 1970-07-30
US3639679A (en) 1972-02-01
FR2033255A1 (fr) 1970-12-04

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Legal Events

Date Code Title Description
ST Notification of lapse