NL71775B - - Google Patents
Info
- Publication number
- NL71775B NL71775B NL71775DA NL71775B NL 71775 B NL71775 B NL 71775B NL 71775D A NL71775D A NL 71775DA NL 71775 B NL71775 B NL 71775B
- 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
- 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)
- Moving Of Heads (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEN36080D DE628732C (de) | 1933-12-15 | 1933-12-15 | Schwingungswandler zur elektromechanischen Tonaufzeichnung oder Tonabnhme |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL71775B true NL71775B (da) |
Family
ID=6477652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL71775D NL71775B (da) | 1933-12-15 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2072610A (da) |
| DE (1) | DE628732C (da) |
| FR (1) | FR782725A (da) |
| GB (1) | GB429740A (da) |
| NL (1) | NL71775B (da) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2502717A (en) * | 1942-09-03 | 1950-04-04 | Hartford Nat Bank & Trust Co | Antivibrational mounting for a variable tuning condenser on a radio apparatus |
| US2451221A (en) * | 1944-10-30 | 1948-10-12 | William H Hutter | Wedged needle type phonograph pickup |
| DK156358C (da) * | 1986-12-19 | 1990-01-02 | Ortofon Mfg As | Pickup med udskiftelig forpart |
-
0
- NL NL71775D patent/NL71775B/xx unknown
-
1933
- 1933-12-15 DE DEN36080D patent/DE628732C/de not_active Expired
-
1934
- 1934-11-22 US US754324A patent/US2072610A/en not_active Expired - Lifetime
- 1934-12-13 GB GB35815/34A patent/GB429740A/en not_active Expired
- 1934-12-14 FR FR782725D patent/FR782725A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB429740A (en) | 1935-06-05 |
| FR782725A (fr) | 1935-06-11 |
| DE628732C (de) | 1936-04-14 |
| US2072610A (en) | 1937-03-02 |