NL18632C - - Google Patents
Info
- Publication number
- NL18632C NL18632C NL18632DA NL18632C NL 18632 C NL18632 C NL 18632C NL 18632D A NL18632D A NL 18632DA NL 18632 C NL18632 C NL 18632C
- 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 |
|---|---|---|---|
| FR608242T | 1925-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL18632C true NL18632C (en:Method) |
Family
ID=8975935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL18632D NL18632C (en:Method) | 1925-11-27 |
Country Status (2)
| Country | Link |
|---|---|
| FR (2) | FR608242A (en:Method) |
| NL (1) | NL18632C (en:Method) |
-
0
- FR FR33772D patent/FR33772E/fr not_active Expired
- NL NL18632D patent/NL18632C/xx active
-
1925
- 1925-11-27 FR FR608242D patent/FR608242A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR608242A (fr) | 1926-07-23 |
| FR33772E (en:Method) | 1929-03-01 |