Patent US2942425A successfully refreshed from Google Patents.
US2942425A
Expired / Lapsed
US
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Mobile dry dock method and apparatus
Assignee: De Long Corp
•
Filing: 1956-09-28
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Granted: 1960-06-28
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Expires: 1976-09-28
Abstract
No abstract record available.
Inventors
- 👤 Long Leon B De
- 👤 George E Suderow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:02
CPC Classifications
B; B63; B63C; B63C1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE515208A
Cited
DE426814C
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US1718006A
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US2375286A
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US2381789A
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GB607826A
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US2771747A
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US2691272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |