Patent US2847962A successfully refreshed from Google Patents.
US2847962A
Expired / Lapsed
US
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Salvage apparatus
Assignee: DAVID G FREEDMAN
•
Filing: 1954-04-09
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Granted: 1958-08-19
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Expires: 1974-04-09
Abstract
No abstract record available.
Inventors
- 👤 Herbert L N Land
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:24
CPC Classifications
B; B63; B63C; B63C7/00; B63C7/06; B63C7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US350184A
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US387933A
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US531485A
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US1337250A
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US1293900A
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US1740231A
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US2391326A
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US2508800A
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US2679224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |