FR667002A - Microtéléphone - Google Patents
MicrotéléphoneInfo
- Publication number
- FR667002A FR667002A FR667002DA FR667002A FR 667002 A FR667002 A FR 667002A FR 667002D A FR667002D A FR 667002DA FR 667002 A FR667002 A FR 667002A
- Authority
- FR
- France
- Prior art keywords
- microphone
- Prior art date
- 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.)
- Expired
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 |
---|---|---|---|
DE1760566X | 1928-02-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR667002A true FR667002A (fr) | 1929-10-09 |
Family
ID=7742167
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR667002D Expired FR667002A (fr) | 1928-02-03 | 1929-01-05 | Microtéléphone |
Country Status (2)
Country | Link |
---|---|
US (1) | US1760566A (fr) |
FR (1) | FR667002A (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2530556A (en) * | 1947-04-26 | 1950-11-21 | Bell Telephone Labor Inc | Support and cord assembly for hand telephones |
-
1929
- 1929-01-05 FR FR667002D patent/FR667002A/fr not_active Expired
- 1929-02-02 US US337057A patent/US1760566A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US1760566A (en) | 1930-05-27 |
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