FR746534A - Improvements to devices intended for the recording or reproduction of sound - Google Patents
Improvements to devices intended for the recording or reproduction of soundInfo
- Publication number
- FR746534A FR746534A FR746534DA FR746534A FR 746534 A FR746534 A FR 746534A FR 746534D A FR746534D A FR 746534DA FR 746534 A FR746534 A FR 746534A
- Authority
- FR
- France
- Prior art keywords
- reproduction
- sound
- recording
- devices intended
- intended
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Moving Of Heads (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US581561A US1962304A (en) | 1931-12-17 | 1931-12-17 | Electromagnetic translating device |
Publications (1)
Publication Number | Publication Date |
---|---|
FR746534A true FR746534A (en) | 1933-05-30 |
Family
ID=24325668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR746534D Expired FR746534A (en) | 1931-12-17 | 1932-11-29 | Improvements to devices intended for the recording or reproduction of sound |
Country Status (4)
Country | Link |
---|---|
US (1) | US1962304A (en) |
DE (1) | DE620359C (en) |
FR (1) | FR746534A (en) |
GB (1) | GB409343A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010023354B4 (en) * | 2010-06-10 | 2023-05-25 | Jenoptik Industrial Metrology Germany Gmbh | Probe arm for a surface measuring device |
-
1931
- 1931-12-17 US US581561A patent/US1962304A/en not_active Expired - Lifetime
-
1932
- 1932-10-28 GB GB30223/32A patent/GB409343A/en not_active Expired
- 1932-11-06 DE DEE43471D patent/DE620359C/en not_active Expired
- 1932-11-29 FR FR746534D patent/FR746534A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB409343A (en) | 1934-04-30 |
US1962304A (en) | 1934-06-12 |
DE620359C (en) | 1935-10-19 |
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