NL25790C - - Google Patents
Info
- Publication number
- NL25790C NL25790C NL25790DA NL25790C NL 25790 C NL25790 C NL 25790C NL 25790D A NL25790D A NL 25790DA NL 25790 C NL25790 C NL 25790C
- Authority
- NL
- Netherlands
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
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1800591X | 1928-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL25790C true NL25790C (ko) |
Family
ID=9681187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL25790D NL25790C (ko) | 1928-11-15 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1800591A (ko) |
| NL (1) | NL25790C (ko) |
-
0
- NL NL25790D patent/NL25790C/xx active
-
1929
- 1929-07-23 US US380439A patent/US1800591A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1800591A (en) | 1931-04-14 |