JPS491222A - - Google Patents

Info

Publication number
JPS491222A
JPS491222A JP3847172A JP3847172A JPS491222A JP S491222 A JPS491222 A JP S491222A JP 3847172 A JP3847172 A JP 3847172A JP 3847172 A JP3847172 A JP 3847172A JP S491222 A JPS491222 A JP S491222A
Authority
JP
Japan
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.)
Pending
Application number
JP3847172A
Other languages
Japanese (ja)
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 filed Critical
Priority to JP3847172A priority Critical patent/JPS491222A/ja
Publication of JPS491222A publication Critical patent/JPS491222A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Piezo-Electric Transducers For Audible Bands (AREA)
JP3847172A 1972-04-17 1972-04-17 Pending JPS491222A (xx)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3847172A JPS491222A (xx) 1972-04-17 1972-04-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3847172A JPS491222A (xx) 1972-04-17 1972-04-17

Publications (1)

Publication Number Publication Date
JPS491222A true JPS491222A (xx) 1974-01-08

Family

ID=12526144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3847172A Pending JPS491222A (xx) 1972-04-17 1972-04-17

Country Status (1)

Country Link
JP (1) JPS491222A (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5139073A (ja) * 1974-09-27 1976-04-01 Nippon Ferrite Kk Choonpasojushingu
JPS51138078U (xx) * 1975-04-29 1976-11-08
JPS5330296A (en) * 1976-09-01 1978-03-22 Seiko Instr & Electronics Ltd Electro-acoustic transducer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3109111A (en) * 1961-10-30 1963-10-29 Euphonics Corp Ultra-sonic microphone

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3109111A (en) * 1961-10-30 1963-10-29 Euphonics Corp Ultra-sonic microphone

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5139073A (ja) * 1974-09-27 1976-04-01 Nippon Ferrite Kk Choonpasojushingu
JPS51138078U (xx) * 1975-04-29 1976-11-08
JPS5330296A (en) * 1976-09-01 1978-03-22 Seiko Instr & Electronics Ltd Electro-acoustic transducer
JPS5527359B2 (xx) * 1976-09-01 1980-07-19

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