DE2208652A1 - - Google Patents
Info
- Publication number
- DE2208652A1 DE2208652A1 DE19722208652 DE2208652A DE2208652A1 DE 2208652 A1 DE2208652 A1 DE 2208652A1 DE 19722208652 DE19722208652 DE 19722208652 DE 2208652 A DE2208652 A DE 2208652A DE 2208652 A1 DE2208652 A1 DE 2208652A1
- Authority
- DE
- Germany
- 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.)
- Granted
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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Function (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Mobile Radio Communication Systems (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722208652 DE2208652C2 (de) | 1972-02-24 | 1972-02-24 | Freisprechanlage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722208652 DE2208652C2 (de) | 1972-02-24 | 1972-02-24 | Freisprechanlage |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2208652A1 true DE2208652A1 (de) | 1973-06-07 |
DE2208652B1 DE2208652B1 (de) | 1973-06-07 |
DE2208652C2 DE2208652C2 (de) | 1973-12-20 |
Family
ID=5836903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19722208652 Expired DE2208652C2 (de) | 1972-02-24 | 1972-02-24 | Freisprechanlage |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2208652C2 (de) |
-
1972
- 1972-02-24 DE DE19722208652 patent/DE2208652C2/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2208652C2 (de) | 1973-12-20 |
DE2208652B1 (de) | 1973-06-07 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
E77 | Valid patent as to the heymanns-index 1977 | ||
8339 | Ceased/non-payment of the annual fee |