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US2603799A
Expired / Lapsed
US
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Boat hull construction
Assignee: Individual
•
Filing: 1949-04-15
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Granted: 1952-07-22
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Expires: 1969-04-15
Abstract
No abstract record available.
Inventors
- 👤 Ralph R Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:22
CPC Classifications
B; B63; B63B; B63B3/00; B63B1/00; B63B1/16; B63B1/18; B63B1/20; B63B2001/201
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |