Patent US6702843B1 successfully refreshed from Google Patents.
US3546012A
Expired / Lapsed
US
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Lithium sulphate ultrasonic transducer
Assignee: United States Atomic Energy Commission
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Filing: 1968-03-27
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Granted: 1970-12-08
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Expires: 1988-03-27
Abstract
No abstract record available.
Inventors
- 👤 Norman E Dixon
- 👤 William J Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:22
CPC Classifications
H; H10; H10N; H10N30/00; H10N30/01; H10N30/06; B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0662; B06B1/0681; H10N30/08; H10N30/082
Claims Analysis
Total Claims: 0
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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) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |