US3221697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boats with two or more hulls
Assignee: Individual
•
Filing: 1963-08-01
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Granted: 1965-12-07
•
Expires: 1983-08-01
Abstract
No abstract record available.
Inventors
- 👤 Allegretti Pier Luigi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:37
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/02; B63B1/10; B63B1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A BOAT HAVING AT LEAST TWO HULLS AND A SUPERSTRUCTURE CONNECTING THE HULLS AND ADAPTED TO RIDE ABOVE THE WATER IN WHICH SAID HULL ARE IMMERSED, SAID SUPERSTRUCTURE COMPRISING A HOLLOW FRAME AND REINFORCING PARTITIONS EXTENDING ACROSS SAID HOLLOW FRAME SYMMETRICAL TO THE LONGITUDINAL PLANE OF SYMMETRY OF THE BOAT, SIMILAR SUPPORTING FINS ATTACHED TO EACH OF SAID HULLS, A FIRST ADDITIONAL REINFORCING STRUCTURE CONNECTING ADJACENT EDGE PORTIONS OF THE FINS OF THE TWO HULLS.
Claim 2
Dependent Claim
75 words
A BOAT HAVING AT LEAST TWO HULLS AND A SUPERSTRUCTURE CONNECTING THE HULLS AND ADAPTED TO RIDE ABOVE THE WATER IN WHICH SAID HULL ARE IMMERSED, SAID SUPERSTRUCTURE COMPRISING A HOLLOW FRAME AND REINFORCING PARTITIONS EXTENDING ACROSS SAID HOLLOW FRAME SYMMETRICAL TO THE LONGITUDINAL PLANE OF SYMMETRY OF THE BOAT, SIMILAR SUPPORTING FINS ATTACHED TO EACH OF SAID HULLS, A FIRST ADDITIONAL REINFORCING STRUCTURE CONNECTING ADJACENT EDGE PORTIONS OF THE FINS OF THE TWO HULLS.
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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |