Patent JPS5784884A successfully refreshed from Google Patents.
Patent US3383720A successfully refreshed from Google Patents.
US3383720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat
Assignee: Woodall Industries Inc
•
Filing: 1963-01-15
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Granted: 1968-05-21
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Expires: 1983-01-15
Abstract
No abstract record available.
Inventors
- 👤 James W Greig
- 👤 Leslie J Berridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:13
CPC Classifications
B; B63; B63B; B63B5/00; B63B5/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A BOAT HULL FORMED OF TWO PLASTIC SHEETS, ONE SHEET BEING SHAPED TO PROVIDE AN OUTER AND LOWER HULL SECTION AND THE OTHER SHEET BEING SHAPED TO PROVIDE AN INNER AND UPPER HULL SECTION, EACH SECTION HAVING A MARGINAL FLANGE PROJECTION OUTWARDLY, SAID TWO FLANGES BEING SUPERPOSED WHEN THE UPPER AND INNER SECTION IS DISPOSED WITHIN THE OUTER AND LOWER SECTION, SAID TWO FLANGES BEING FUSED TOGETHER PROVIDING A HOLLOW BOAT HULL THE TWO SIDE WALL PORTIONS OF WHICH CONSITUTE HERMETICALLY SEALED HOLLOW CHAMBERS, SAID TWO FUSED FLANGES CONSTITUTING A SUPPORT FOR THE ATTACHMENT OF PARTS TO THE HULL WITHOUT PENETRATING THE WALL OF THE HOLLOW CHAMBERS OF THE HULL, SAID BOAT HULL CHARACTERIZED IN THAT THE BOTTOM PORTION OF THE OUTER AND LOWER SECTION IS CORRUGATED FORE AND AFT.
Claim 2
Dependent Claim
130 words
A BOAT HULL FORMED OF TWO PLASTIC SHEETS, ONE SHEET BEING SHAPED TO PROVIDE AN OUTER AND LOWER HULL SECTION AND THE OTHER SHEET BEING SHAPED TO PROVIDE AN INNER AND UPPER HULL SECTION, EACH SECTION HAVING A MARGINAL FLANGE PROJECTION OUTWARDLY, SAID TWO FLANGES BEING SUPERPOSED WHEN THE UPPER AND INNER SECTION IS DISPOSED WITHIN THE OUTER AND LOWER SECTION, SAID TWO FLANGES BEING FUSED TOGETHER PROVIDING A HOLLOW BOAT HULL THE TWO SIDE WALL PORTIONS OF WHICH CONSITUTE HERMETICALLY SEALED HOLLOW CHAMBERS, SAID TWO FUSED FLANGES CONSTITUTING A SUPPORT FOR THE ATTACHMENT OF PARTS TO THE HULL WITHOUT PENETRATING THE WALL OF THE HOLLOW CHAMBERS OF THE HULL, SAID BOAT HULL CHARACTERIZED IN THAT THE BOTTOM PORTION OF THE OUTER AND LOWER SECTION IS CORRUGATED FORE AND AFT.
References Cited (Backward Citations)
US1272412A
Cited
US2334072A
Cited
US2370069A
Cited
US2698447A
Cited
US2950701A
Cited
US3041994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |