US2761076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic generator and crystal holder
Assignee: Individual
•
Filing: 1951-08-10
•
Granted: 1956-08-28
•
Expires: 1971-08-10
Abstract
No abstract record available.
Inventors
- 👤 Marjorie B Hansell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:29
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0651
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A CRYSTAL ASSEMBLY COMPRISING A PIEZOELECTRIC CRYSTAL, A PLATED ELECTRODE BONDED UPON TWO OPPOSITE FACES OF SAID CRYSTAL, A SEPARATE RING MEMBER FOR EACH OF SAID ELECTRODES, SAID RING MEMBERS BEING REMOVABLY APPLIED IN CONTACT WITH SUBSTANTIALLY THE PERIPHERAL AREA ONLY OF SAID RESPECTIVE ELECTRODES, THE OUTER PERIPHERAL SURFACES OF SAID RING MEMBERS CURVING OUTWARD FROM THE EDGES OF SAID ELECTRODES AND AWAY FROM THE MASS OF SAID CRYSTAL.
Claim 2
Dependent Claim
69 words
A CRYSTAL ASSEMBLY COMPRISING A PIEZOELECTRIC CRYSTAL, A PLATED ELECTRODE BONDED UPON TWO OPPOSITE FACES OF SAID CRYSTAL, A SEPARATE RING MEMBER FOR EACH OF SAID ELECTRODES, SAID RING MEMBERS BEING REMOVABLY APPLIED IN CONTACT WITH SUBSTANTIALLY THE PERIPHERAL AREA ONLY OF SAID RESPECTIVE ELECTRODES, THE OUTER PERIPHERAL SURFACES OF SAID RING MEMBERS CURVING OUTWARD FROM THE EDGES OF SAID ELECTRODES AND AWAY FROM THE MASS OF SAID CRYSTAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |