Patent US3201621A successfully refreshed from Google Patents.
US3201621A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally stabilized crystal units
Assignee: Individual
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Filing: 1963-03-18
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Granted: 1965-08-17
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Expires: 1983-03-18
Abstract
No abstract record available.
Inventors
- 👤 Milner Consuelo Stokes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:07
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/05; H03H9/08; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/20; G05D23/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A RAPID TEMPERATURE STABILIZED PIEZOELECTRIC STRUCTURE INCLUDING A CRYSTAL MOUNTED ON A SUPPORT STRUCTURE, SAID CRYSTAL HAVING OPPOSITELY PARTIALLY ELECTRODED ACTIVE FACES, THE ELECTRODED PORTIONS OF SAID FACES BEING GENERALLY CIRCULAR AND CENTRALLY DISPOSED WHICH COMPRISES: (A) A GENERALLY HORSESHOE-SHAPED HEATING ELECTRODE DISPOSED IN INTIMATE CONTACT WITH ONE OF SAID FACES, COAXIAL WITH AND SPACED FROM SAID ELECTRODED PORTIONS, (B) A SOURCE OF ELECTRICAL ENERGY,
Claim 2
Dependent Claim
65 words
A RAPID TEMPERATURE STABILIZED PIEZOELECTRIC STRUCTURE INCLUDING A CRYSTAL MOUNTED ON A SUPPORT STRUCTURE, SAID CRYSTAL HAVING OPPOSITELY PARTIALLY ELECTRODED ACTIVE FACES, THE ELECTRODED PORTIONS OF SAID FACES BEING GENERALLY CIRCULAR AND CENTRALLY DISPOSED WHICH COMPRISES: (A) A GENERALLY HORSESHOE-SHAPED HEATING ELECTRODE DISPOSED IN INTIMATE CONTACT WITH ONE OF SAID FACES, COAXIAL WITH AND SPACED FROM SAID ELECTRODED PORTIONS, (B) A SOURCE OF ELECTRICAL ENERGY,
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |