FR329950A - Microphone system - Google Patents
Microphone systemInfo
- Publication number
- FR329950A FR329950A FR329950DA FR329950A FR 329950 A FR329950 A FR 329950A FR 329950D A FR329950D A FR 329950DA FR 329950 A FR329950 A FR 329950A
- Authority
- FR
- France
- Prior art keywords
- microphone system
- 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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR329950T | 1903-03-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR329950A true FR329950A (en) | 1903-08-08 |
Family
ID=1379763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR329950D Expired FR329950A (en) | 1903-03-04 | 1903-03-04 | Microphone system |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR329950A (en) |
-
1903
- 1903-03-04 FR FR329950D patent/FR329950A/en not_active Expired
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