Patent US5390345A successfully refreshed from Google Patents.
US2962994A
Expired / Lapsed
US
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High-pressure hydraulic press
Assignee: Douglas Aircraft Co Inc
•
Filing: 1953-10-22
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Granted: 1960-12-06
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Expires: 1973-10-22
Abstract
No abstract record available.
Inventors
- 👤 Orville A Wheelon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 21:52
CPC Classifications
B; B30; B30B; B30B5/00; B30B5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2480369A
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US2418393A
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US2576085A
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US2550672A
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US2677171A
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US2696183A
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US2771850A
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US2741205A
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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) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |