Patent US3012534A successfully refreshed from Google Patents.
US3012534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure minesweeping
Assignee: Individual
•
Filing: 1954-07-16
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Granted: 1961-12-12
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Expires: 1974-07-16
Abstract
No abstract record available.
Inventors
- 👤 Charles S Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:06
CPC Classifications
B; B63; B63G; B63G7/00; B63G7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US39394A
Cited
US321569A
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US1310326A
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FR955055A
Cited
US717356A
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GB190905693A
Cited
US2353360A
Cited
US2395944A
Cited
US2543253A
Cited
FR940395A
Cited
US2745370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |