US3475628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sonic transducer apparatus
Assignee: The Ohio State University
•
Filing: 1966-12-28
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Granted: 1969-10-28
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Expires: 1986-12-28
Abstract
No abstract record available.
Inventors
- 👤 Robert C Mcmaster
- 👤 Charles C Libby
- 👤 Hildegard M Minchenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:58
CPC Classifications
B; B06; B06B; B06B3/00; B25; B25C; B25C1/00; B25C1/06; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53709; Y10T29/5377; Y10T29/53774
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2514080A
Cited
US2651148A
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US2680333A
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US2831295A
Cited
US2774193A
Cited
US3394274A
Cited
US3368085A
Cited
US3396285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |