NL62776C - - Google Patents
Info
- Publication number
- NL62776C NL62776C NL62776DA NL62776C NL 62776 C NL62776 C NL 62776C NL 62776D A NL62776D A NL 62776DA NL 62776 C NL62776 C NL 62776C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/58—Multiple crystal filters
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US266072A US2227268A (en) | 1939-04-05 | 1939-04-05 | Piezoelectric apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL62776C true NL62776C (enrdf_load_html_response) |
Family
ID=23013047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL62776D NL62776C (enrdf_load_html_response) | 1939-04-05 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2227268A (enrdf_load_html_response) |
| FR (1) | FR863631A (enrdf_load_html_response) |
| NL (1) | NL62776C (enrdf_load_html_response) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2625035A (en) * | 1945-12-22 | 1953-01-13 | United Aircraft Corp | Supersonic inspection device |
| DE972215C (de) * | 1948-10-16 | 1959-06-04 | Julius Dipl-Ing Lorenz | Anordnung zur Aufzeichnung des Amplitudenverlaufs von Wechselspannungen |
| US2767336A (en) * | 1951-05-22 | 1956-10-16 | David L Arenberg | Cement for bonding elements of a delay line with low transmission losses using mixtures of inorganic salts |
| US2883486A (en) * | 1954-03-09 | 1959-04-21 | Bell Telephone Labor Inc | Piezoelectric switching device |
| US2885509A (en) * | 1956-03-12 | 1959-05-05 | Erdco Inc | Electrostatic relays and controls |
| NL236375A (enrdf_load_html_response) * | 1958-02-21 | 1900-01-01 | ||
| US3015708A (en) * | 1959-07-02 | 1962-01-02 | Bell Telephone Labor Inc | Combined memory storage and switching arrangements |
| US3285362A (en) * | 1959-07-20 | 1966-11-15 | Csf | Sound wave radiator devices |
| US3109153A (en) * | 1960-11-18 | 1963-10-29 | Gen Dynamics Corp | Adjustable piezoelectric wave filter having two resonance peaks |
| US3166683A (en) * | 1961-05-01 | 1965-01-19 | American Radiator & Standard | Scanning bimorph transducer |
| US3209181A (en) * | 1962-09-11 | 1965-09-28 | Philips Corp | Temperature-independent transducer |
| JPS5760528A (en) * | 1980-09-30 | 1982-04-12 | Sony Corp | Head supporting in recorder and reproducer |
-
0
- NL NL62776D patent/NL62776C/xx active
-
1939
- 1939-04-05 US US266072A patent/US2227268A/en not_active Expired - Lifetime
-
1940
- 1940-03-01 FR FR863631D patent/FR863631A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2227268A (en) | 1940-12-31 |
| FR863631A (fr) | 1941-04-05 |