NL27080C - - Google Patents
Info
- Publication number
- NL27080C NL27080C NL27080DA NL27080C NL 27080 C NL27080 C NL 27080C NL 27080D A NL27080D A NL 27080DA NL 27080 C NL27080 C NL 27080C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/40—Applications of speech amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE665897X | 1927-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL27080C true NL27080C (en:Method) |
Family
ID=6589604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL27080D NL27080C (en:Method) | 1927-12-16 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE356662A (en:Method) |
| FR (1) | FR665897A (en:Method) |
| NL (1) | NL27080C (en:Method) |
-
0
- NL NL27080D patent/NL27080C/xx active
- BE BE356662D patent/BE356662A/xx unknown
-
1928
- 1928-12-15 FR FR665897D patent/FR665897A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE356662A (en:Method) | |
| FR665897A (fr) | 1929-09-24 |