LU30955A1 - - Google Patents

Info

Publication number: LU30955A1
Authority: LU; Luxembourg

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.)

1950-09-06

Publication of LU30955A1 publication Critical patent/LU30955A1/xx

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

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Interface Circuits In Exchanges (AREA)

LU30955D 1950-09-06 LU30955A1 (xx)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR1024329T		1950-09-06

Publications (1)

Publication Number	Publication Date
LU30955A1 true LU30955A1 (xx)

Family

ID=9578766

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
LU30955D LU30955A1 (xx)	1950-09-06

Country Status (5)

Country	Link
BE (1)	BE505491A (xx)
CH (1)	CH305270A (xx)
FR (2)	FR1024329A (xx)
GB (1)	GB690720A (xx)
LU (1)	LU30955A1 (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1129543B (de) *	1958-06-25	1962-05-17	Gylling & Co Ab	Schaltungsanordnung fuer sprachgesteuerte Wechselsprechanlagen

0
- BE BE505491D patent/BE505491A/xx unknown
- LU LU30955D patent/LU30955A1/xx unknown
1950
- 1950-09-06 FR FR1024329D patent/FR1024329A/fr not_active Expired
1951
- 1951-08-17 FR FR61954D patent/FR61954E/fr not_active Expired
- 1951-08-28 CH CH305270D patent/CH305270A/fr unknown
- 1951-09-06 GB GB21086/51A patent/GB690720A/en not_active Expired

Also Published As

Publication number	Publication date
FR61954E (fr)	1955-06-01
GB690720A (en)	1953-04-29
BE505491A (xx)
FR1024329A (fr)	1953-03-31
CH305270A (fr)	1955-02-15

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