US3063068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat construction
Assignee: CALKINS CRAFT BOAT Co
•
Filing: 1958-12-24
•
Granted: 1962-11-13
•
Expires: 1978-12-24
Abstract
No abstract record available.
Inventors
- 👤 George A Calkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:44
CPC Classifications
B; B63; B63H; B63H20/00; B63H20/02; B63H20/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2478042A
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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) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |