FR16502E - Telephone transmitter - Google Patents
Telephone transmitterInfo
- Publication number
- FR16502E FR16502E FR16502A FR16502DA FR16502E FR 16502 E FR16502 E FR 16502E FR 16502 A FR16502 A FR 16502A FR 16502D A FR16502D A FR 16502DA FR 16502 E FR16502 E FR 16502E
- Authority
- FR
- France
- Prior art keywords
- telephone transmitter
- telephone
- transmitter
- 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
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R21/00—Variable-resistance transducers
- H04R21/02—Microphones
- H04R21/021—Microphones with granular resistance material
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR446872T |
Publications (1)
Publication Number | Publication Date |
---|---|
FR16502E true FR16502E (en) | 1913-02-21 |
Family
ID=8900557
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR16299A Expired FR16299E (en) | Telephone transmitter | ||
FR17066A Expired FR17066E (en) | Telephone transmitter | ||
FR16502A Expired FR16502E (en) | Telephone transmitter | ||
FR446872A Expired FR446872A (en) | 1911-10-12 | Telephone transmitter |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR16299A Expired FR16299E (en) | Telephone transmitter | ||
FR17066A Expired FR17066E (en) | Telephone transmitter |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR446872A Expired FR446872A (en) | 1911-10-12 | Telephone transmitter |
Country Status (1)
Country | Link |
---|---|
FR (4) | FR446872A (en) |
-
0
- FR FR16299A patent/FR16299E/en not_active Expired
- FR FR17066A patent/FR17066E/en not_active Expired
- FR FR16502A patent/FR16502E/en not_active Expired
-
1911
- 1911-10-12 FR FR446872A patent/FR446872A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR446872A (en) | 1912-12-17 |
FR16299E (en) | 1912-12-24 |
FR17066E (en) | 1913-06-19 |
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