FR408985A - - Google Patents
Info
- Publication number
- FR408985A FR408985A FR408985DA FR408985A FR 408985 A FR408985 A FR 408985A FR 408985D A FR408985D A FR 408985DA FR 408985 A FR408985 A FR 408985A
- Authority
- FR
- France
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB190922580T | 1909-10-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR408985A true FR408985A (de) |
Family
ID=32557907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR408985D Active FR408985A (de) | 1909-10-04 |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE231731C (de) |
| FR (1) | FR408985A (de) |
| GB (1) | GB190922580A (de) |
-
0
- DE DENDAT231731D patent/DE231731C/de active Active
- FR FR408985D patent/FR408985A/fr active Active
-
1909
- 1909-10-04 GB GB190922580D patent/GB190922580A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE231731C (de) | |
| GB190922580A (en) | 1910-09-29 |