FR443172A - Diaphragm for talking machines - Google Patents
Diaphragm for talking machinesInfo
- Publication number
- FR443172A FR443172A FR443172A FR443172DA FR443172A FR 443172 A FR443172 A FR 443172A FR 443172 A FR443172 A FR 443172A FR 443172D A FR443172D A FR 443172DA FR 443172 A FR443172 A FR 443172A
- Authority
- FR
- France
- Prior art keywords
- diaphragm
- talking machines
- talking
- machines
- 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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Casings For Electric Apparatus (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR443172T | 1911-07-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR443172A true FR443172A (en) | 1912-09-18 |
Family
ID=1484274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR443172A Expired FR443172A (en) | 1911-07-07 | 1911-07-07 | Diaphragm for talking machines |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT63874B (en) |
FR (1) | FR443172A (en) |
GB (1) | GB191215530A (en) |
NL (1) | NL553C (en) |
-
1911
- 1911-07-07 FR FR443172A patent/FR443172A/en not_active Expired
-
1912
- 1912-07-03 AT AT63874D patent/AT63874B/en active
- 1912-07-03 GB GB191215530D patent/GB191215530A/en not_active Expired
- 1912-07-03 NL NL658A patent/NL553C/en active
Also Published As
Publication number | Publication date |
---|---|
NL553C (en) | 1915-03-01 |
GB191215530A (en) | 1912-11-21 |
AT63874B (en) | 1914-03-10 |
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