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US3465486A
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US
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Structural unit for beam structures and flotation hulls and method of manufacture
Assignee: ETIENNE D ROLIN
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Filing: 1967-06-02
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Granted: 1969-09-09
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Expires: 1987-06-02
Abstract
No abstract record available.
Inventors
- 👤 Etienne D Rolin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:41
CPC Classifications
B; B63; B63B; B63B3/00; B63B3/14; B63B3/26; B63B5/00; B63B5/12; B63B2003/265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US793358A
Cited
US3057119A
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US3134113A
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US3254462A
Cited
US3173523A
Cited
US3241285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-08 | 1973-03-10 | 1973-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-08 | 1977-03-10 | 1977-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-08 | 1981-03-10 | 1981-09-09 | $7700.00 | Window Closed / Lapsed |