Patent US4677049A successfully refreshed from Google Patents.
US2906993A
Expired / Lapsed
US
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Transducer for underwater sound
Assignee: Individual
•
Filing: 1946-05-22
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Granted: 1959-09-29
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Expires: 1966-05-22
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Steinberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:21
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; B06B1/0622; B06B1/0629; G; G10; G10K; G10K11/00; G10K11/18; G10K11/20; G10K11/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2384465A
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US1067207A
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US1563626A
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US2374637A
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US2406767A
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US2283285A
Cited
US2405226A
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US2436377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |