Patent US3517226A successfully refreshed from Google Patents.
US3517226A
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Ultrasonic piezoelectric transducer with acoustic lens
Assignee: U SONICS Inc
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Filing: 1968-03-25
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Granted: 1970-06-23
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Expires: 1988-03-25
Abstract
No abstract record available.
Inventors
- 👤 Roy E Jones Sr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:37
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/30; B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0662; B06B1/0677
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3308904A
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US2593031A
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US3058103A
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US3107746A
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US3093809A
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US3179381A
Cited
US3360664A
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US3296586A
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US3305824A
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US3387257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |