JPS5746264B2 - - Google Patents

Info

Publication number
JPS5746264B2
JPS5746264B2 JP8424475A JP8424475A JPS5746264B2 JP S5746264 B2 JPS5746264 B2 JP S5746264B2 JP 8424475 A JP8424475 A JP 8424475A JP 8424475 A JP8424475 A JP 8424475A JP S5746264 B2 JPS5746264 B2 JP S5746264B2
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.)
Expired
Application number
JP8424475A
Other languages
Japanese (ja)
Other versions
JPS527608A (en
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 JP8424475A priority Critical patent/JPS527608A/en
Priority to US05/652,847 priority patent/US4051325A/en
Priority to CA244,584A priority patent/CA1048186A/en
Publication of JPS527608A publication Critical patent/JPS527608A/en
Publication of JPS5746264B2 publication Critical patent/JPS5746264B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency
JP8424475A 1975-01-31 1975-07-08 Simultaneous communication interphone Granted JPS527608A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP8424475A JPS527608A (en) 1975-07-08 1975-07-08 Simultaneous communication interphone
US05/652,847 US4051325A (en) 1975-01-31 1976-01-27 Speech intercommunication system
CA244,584A CA1048186A (en) 1975-01-31 1976-01-30 Speech intercommunication systems particularly for hands-free loudspeaker telephones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8424475A JPS527608A (en) 1975-07-08 1975-07-08 Simultaneous communication interphone

Publications (2)

Publication Number Publication Date
JPS527608A JPS527608A (en) 1977-01-20
JPS5746264B2 true JPS5746264B2 (en) 1982-10-02

Family

ID=13825038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8424475A Granted JPS527608A (en) 1975-01-31 1975-07-08 Simultaneous communication interphone

Country Status (1)

Country Link
JP (1) JPS527608A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6350617Y2 (en) * 1983-02-07 1988-12-26
JPH0253712B2 (en) * 1982-06-17 1990-11-19 Ebara Mfg

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0253712B2 (en) * 1982-06-17 1990-11-19 Ebara Mfg
JPS6350617Y2 (en) * 1983-02-07 1988-12-26

Also Published As

Publication number Publication date
JPS527608A (en) 1977-01-20

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