BE347422A - - Google Patents
Info
- Publication number
- BE347422A BE347422A BE347422DA BE347422A BE 347422 A BE347422 A BE 347422A BE 347422D A BE347422D A BE 347422DA BE 347422 A BE347422 A BE 347422A
- 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
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE302693X | 1927-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE347422A true BE347422A (en:Method) |
Family
ID=3867440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE347422D BE347422A (en:Method) | 1927-12-20 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1743290A (en:Method) |
| BE (1) | BE347422A (en:Method) |
| GB (1) | GB302693A (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2456346A (en) * | 1945-01-24 | 1948-12-14 | Paul S Veneklasen | Sound shield for telephone transmitters |
| GB2252474A (en) * | 1991-01-31 | 1992-08-05 | Chang Chin Lu | Microphone handle |
-
0
- BE BE347422D patent/BE347422A/xx unknown
-
1928
- 1928-03-30 US US265989A patent/US1743290A/en not_active Expired - Lifetime
- 1928-12-19 GB GB37532/28A patent/GB302693A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1743290A (en) | 1930-01-14 |
| GB302693A (en) | 1930-01-23 |