NL54203C - - Google Patents
Info
- Publication number
- NL54203C NL54203C NL54203DA NL54203C NL 54203 C NL54203 C NL 54203C NL 54203D A NL54203D A NL 54203DA NL 54203 C NL54203 C NL 54203C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Alarm Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH499442X | 1937-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL54203C true NL54203C (en:Method) |
Family
ID=4516864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL54203D NL54203C (en:Method) | 1937-02-25 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE425962A (en:Method) |
| CH (1) | CH194053A (en:Method) |
| FR (1) | FR832609A (en:Method) |
| GB (1) | GB499442A (en:Method) |
| NL (1) | NL54203C (en:Method) |
-
0
- NL NL54203D patent/NL54203C/xx active
- BE BE425962D patent/BE425962A/xx unknown
-
1937
- 1937-02-25 CH CH194053D patent/CH194053A/de unknown
-
1938
- 1938-01-25 FR FR832609D patent/FR832609A/fr not_active Expired
- 1938-02-16 GB GB4856/38A patent/GB499442A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH194053A (de) | 1937-11-15 |
| BE425962A (en:Method) | |
| FR832609A (fr) | 1938-09-29 |
| GB499442A (en) | 1939-01-24 |