NL48530C - - Google Patents
Info
- Publication number
- NL48530C NL48530C NL48530DA NL48530C NL 48530 C NL48530 C NL 48530C NL 48530D A NL48530D A NL 48530DA NL 48530 C NL48530 C NL 48530C
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US34122A US2126886A (en) | 1935-08-01 | 1935-08-01 | Acoustic rectifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL48530C true NL48530C (US20030220297A1-20031127-C00009.png) |
Family
ID=21874445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL48530D NL48530C (US20030220297A1-20031127-C00009.png) | 1935-08-01 |
Country Status (5)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2416337A (en) * | 1943-06-10 | 1947-02-25 | Bell Telephone Labor Inc | Vibration damping circuit |
| US4499566A (en) * | 1981-01-21 | 1985-02-12 | The United States Of America As Represented By The Secretary Of The Navy | Electro-ceramic stack |
-
0
- NL NL48530D patent/NL48530C/xx active
-
1935
- 1935-08-01 US US34122A patent/US2126886A/en not_active Expired - Lifetime
-
1936
- 1936-07-17 GB GB19888/36A patent/GB477623A/en not_active Expired
- 1936-07-29 FR FR815899D patent/FR815899A/fr not_active Expired
- 1936-08-01 DE DEI55668D patent/DE710803C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB477623A (en) | 1938-01-04 |
| US2126886A (en) | 1938-08-16 |
| DE710803C (de) | 1941-09-22 |
| FR815899A (fr) | 1937-07-24 |
