BE505303A - - Google Patents
Info
- Publication number
- BE505303A BE505303A BE505303DA BE505303A BE 505303 A BE505303 A BE 505303A BE 505303D A BE505303D A BE 505303DA BE 505303 A BE505303 A BE 505303A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/21—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads
- H04M1/215—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads by non-intrusive coupling means, e.g. acoustic couplers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH287406T | 1950-08-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE505303A true BE505303A (en:Method) |
Family
ID=4485768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE505303D BE505303A (en:Method) | 1950-08-18 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE505303A (en:Method) |
| CH (1) | CH287406A (en:Method) |
-
0
- BE BE505303D patent/BE505303A/xx unknown
-
1950
- 1950-08-18 CH CH287406D patent/CH287406A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH287406A (de) | 1952-11-30 |