NL87749C - - Google Patents
Info
- Publication number
- NL87749C NL87749C NL87749DA NL87749C NL 87749 C NL87749 C NL 87749C NL 87749D A NL87749D A NL 87749DA NL 87749 C NL87749 C NL 87749C
- 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
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
- H04R17/06—Gramophone pick-ups using a stylus; Recorders using a stylus comprising two or more styli or transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Supporting Of Heads In Record-Carrier Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL185764 | 1954-03-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL87749C true NL87749C (xx) |
Family
ID=19750656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL87749D NL87749C (xx) | 1954-03-10 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2868893A (xx) |
| BE (1) | BE536330A (xx) |
| CH (1) | CH327013A (xx) |
| DE (1) | DE962653C (xx) |
| FR (1) | FR1120394A (xx) |
| GB (1) | GB765621A (xx) |
| NL (1) | NL87749C (xx) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1054727B (de) * | 1955-05-04 | 1959-04-09 | Funkwerk Leipzig Veb | Piezoelektrisches Tonabnehmersystem |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2563860A (en) * | 1946-10-11 | 1951-08-14 | Gray Mfg Co | Sound recording and reproducing head |
| US2570578A (en) * | 1949-03-11 | 1951-10-09 | Magnavox Co | Dual stylus phonograph pickup |
| US2777016A (en) * | 1952-12-19 | 1957-01-08 | Electro Voice | Dual needle phonograph cartridge |
-
0
- BE BE536330D patent/BE536330A/xx unknown
- NL NL87749D patent/NL87749C/xx active
-
1955
- 1955-03-05 DE DEN10297A patent/DE962653C/de not_active Expired
- 1955-03-07 GB GB6625/55A patent/GB765621A/en not_active Expired
- 1955-03-08 CH CH327013D patent/CH327013A/de unknown
- 1955-03-08 FR FR1120394D patent/FR1120394A/fr not_active Expired
- 1955-03-09 US US493220A patent/US2868893A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE962653C (de) | 1957-04-25 |
| BE536330A (xx) | |
| GB765621A (en) | 1957-01-09 |
| CH327013A (de) | 1958-01-15 |
| FR1120394A (fr) | 1956-07-04 |
| US2868893A (en) | 1959-01-13 |