Patent US3099813A successfully refreshed from Google Patents.
US3099813A
Expired / Lapsed
US
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Electrolytic-ignition underwater sound source
Assignee: Engelhard Industries Inc
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Filing: 1957-04-26
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Granted: 1963-07-30
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Expires: 1977-04-26
Abstract
No abstract record available.
Inventors
- 👤 Edward P Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:25
CPC Classifications
G; G10; G10K; G10K15/00; G10K15/04; G10K15/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2679205A
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US2820214A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |