US3019754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ship salvage system
Assignee: Individual
•
Filing: 1957-04-04
•
Granted: 1962-02-06
•
Expires: 1977-04-04
Abstract
No abstract record available.
Inventors
- 👤 Welshausen William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:05
CPC Classifications
B; B63; B63C; B63C7/00; B63C7/06; B63C7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US317274A
Cited
US350184A
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US572364A
Cited
GB189919109A
Cited
US963168A
Cited
US1019724A
Cited
US1150255A
Cited
US1486131A
Cited
US1863732A
Cited
US2918030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |