Patent US3365823A successfully refreshed from Google Patents.
US3365823A
Expired / Lapsed
US
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Ocean floor mining system
Assignee: Scientia Corp
•
Filing: 1964-11-23
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Granted: 1968-01-30
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Expires: 1984-11-23
Abstract
No abstract record available.
Inventors
- 👤 Vogt Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:28
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/006; E21; E21C; E21C50/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL98605C
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US987352A
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US998789A
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US1183750A
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US1250288A
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US1323122A
Cited
US2013276A
Cited
US2377802A
Cited
US3276152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |