NL52236C - - Google Patents
Info
- Publication number
- NL52236C NL52236C NL52236DA NL52236C NL 52236 C NL52236 C NL 52236C NL 52236D A NL52236D A NL 52236DA NL 52236 C NL52236 C NL 52236C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE494793X | 1936-11-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL52236C true NL52236C (https=) |
Family
ID=6544772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL52236D NL52236C (https=) | 1936-11-02 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2154300A (https=) |
| GB (1) | GB494793A (https=) |
| NL (1) | NL52236C (https=) |
-
0
- NL NL52236D patent/NL52236C/xx active
-
1937
- 1937-10-20 GB GB28644/37A patent/GB494793A/en not_active Expired
- 1937-10-29 US US171602A patent/US2154300A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2154300A (en) | 1939-04-11 |
| GB494793A (en) | 1938-11-01 |