NL28475C - - Google Patents
Info
- Publication number
- NL28475C NL28475C NL28475DA NL28475C NL 28475 C NL28475 C NL 28475C NL 28475D A NL28475D A NL 28475DA NL 28475 C NL28475 C NL 28475C
- 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/16—Mounting or connecting stylus to transducer with or without damping means
-
- 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)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
- Adjustable Resistors (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US271813A US1906615A (en) | 1928-04-21 | 1928-04-21 | Electric pick-up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL28475C true NL28475C (https=) |
Family
ID=23037202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL28475D NL28475C (https=) | 1928-04-21 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1906615A (https=) |
| DE (1) | DE613236C (https=) |
| GB (1) | GB310284A (https=) |
| NL (1) | NL28475C (https=) |
-
0
- NL NL28475D patent/NL28475C/xx active
-
1928
- 1928-04-21 US US271813A patent/US1906615A/en not_active Expired - Lifetime
-
1929
- 1929-04-16 DE DEA57470D patent/DE613236C/de not_active Expired
- 1929-04-22 GB GB12437/29A patent/GB310284A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE613236C (de) | 1935-05-16 |
| GB310284A (en) | 1930-09-22 |
| US1906615A (en) | 1933-05-02 |