FR620382A - Electro-magnetic device - Google Patents
Electro-magnetic deviceInfo
- Publication number
- FR620382A FR620382A FR620382DA FR620382A FR 620382 A FR620382 A FR 620382A FR 620382D A FR620382D A FR 620382DA FR 620382 A FR620382 A FR 620382A
- Authority
- FR
- France
- Prior art keywords
- electro
- magnetic device
- magnetic
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US66624A US1709571A (en) | 1925-11-03 | 1925-11-03 | Electromechanical translating device |
US111209A US1628666A (en) | 1926-05-24 | 1926-05-24 | Electromagnetic device |
Publications (1)
Publication Number | Publication Date |
---|---|
FR620382A true FR620382A (en) | 1927-04-21 |
Family
ID=26746972
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR620382D Expired FR620382A (en) | 1925-11-03 | 1926-07-02 | Electro-magnetic device |
FR32964D Expired FR32964E (en) | 1925-11-03 | 1927-01-11 | Electro-magnetic device |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR32964D Expired FR32964E (en) | 1925-11-03 | 1927-01-11 | Electro-magnetic device |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE335046A (en) |
FR (2) | FR620382A (en) |
GB (2) | GB260946A (en) |
NL (1) | NL22500C (en) |
-
0
- NL NL22500D patent/NL22500C/xx active
- BE BE335046D patent/BE335046A/xx unknown
-
1926
- 1926-07-02 FR FR620382D patent/FR620382A/en not_active Expired
- 1926-07-10 GB GB1732526A patent/GB260946A/en not_active Expired
-
1927
- 1927-01-11 FR FR32964D patent/FR32964E/en not_active Expired
- 1927-02-09 GB GB366227A patent/GB271409A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB271409A (en) | 1927-10-27 |
FR32964E (en) | 1928-06-06 |
NL22500C (en) | |
GB260946A (en) | 1927-10-10 |
BE335046A (en) |
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