US3129346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency and time control
Assignee: AT&T Inc
•
Filing: 1961-12-22
•
Granted: 1964-04-14
•
Expires: 1981-12-22
Abstract
No abstract record available.
Inventors
- 👤 Donald L White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:06
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/323; G; G04; G04F; G04F5/00; G04F5/04; G04F5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
AN ELECTROMECHANICAL RESONATOR FOR PRODUCING RESONANCE IN A PREDETERMINED FREQUENCY RANGE COMPRISING A THIN FLAT BODY OF DIMENSIONS FOR WHICH SAID BODY IS MECHANICALLY RESONANT AT A SUB-HARMONIC OF SAID PREDETERMINED FREQUENCY, MEANS FOR FORMING WITHIN SAID BODY A PIEZOELECTRIC REGION THAT EXTENDS TRANSVERSELY WITH RESPECT TO THE THICKNESS OF SAID BODY, THE THICKNESS OF SAID REGION BEING A SMALL FRACTION OF THE THICKNESS OF SAID BODY, AND ELECTRICAL CIRCUIT MEANS FOR COUPLING WITH A PIEZOELECTRIC FIELD IN SAID REGION.
Claim 2
Dependent Claim
80 words
AN ELECTROMECHANICAL RESONATOR FOR PRODUCING RESONANCE IN A PREDETERMINED FREQUENCY RANGE COMPRISING A THIN FLAT BODY OF DIMENSIONS FOR WHICH SAID BODY IS MECHANICALLY RESONANT AT A SUB-HARMONIC OF SAID PREDETERMINED FREQUENCY, MEANS FOR FORMING WITHIN SAID BODY A PIEZOELECTRIC REGION THAT EXTENDS TRANSVERSELY WITH RESPECT TO THE THICKNESS OF SAID BODY, THE THICKNESS OF SAID REGION BEING A SMALL FRACTION OF THE THICKNESS OF SAID BODY, AND ELECTRICAL CIRCUIT MEANS FOR COUPLING WITH A PIEZOELECTRIC FIELD IN SAID REGION.
References Cited (Backward Citations)
US2929885A
Cited
US2998575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |