|
US4451754A
|
High frequency piezoelectric resonator |
Expired / Lapsed
|
1979-11-02 |
1984-05-29 |
7 |
Details
|
|
US4445256A
|
Method of manufacturing piezoelectric resonator components |
Expired / Lapsed
|
1982-02-03 |
1984-05-01 |
6 |
Details
|
|
US4245173A
|
Beveled, coupled mode piezo-electric resonator |
Expired / Lapsed
|
1979-03-27 |
1981-01-13 |
18 |
Details
|
|
US4012648A
|
Process for manufacturing piezoelectric resonators and reso… |
Expired / Lapsed
|
1975-04-28 |
1977-03-15 |
14 |
Details
|