Patent US3955270A successfully refreshed from Google Patents.
US3071785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible boats
Assignee: Individual
•
Filing: 1957-05-29
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Granted: 1963-01-08
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Expires: 1977-05-29
Abstract
No abstract record available.
Inventors
- 👤 Holt William John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:30
CPC Classifications
B; B63; B63B; B63B7/00; B63B7/06
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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |