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US3400848A
Expired / Lapsed
US
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Hull structure with honeycombed interior surface for deep submergence vessels
Assignee: The Pennsylvania State University
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Filing: 1967-02-02
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Granted: 1968-09-10
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Expires: 1987-02-02
Abstract
No abstract record available.
Inventors
- 👤 Amos J Shaler
- 👤 Joseph C Conway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:33
CPC Classifications
B; B63; B63B; B63B3/00; B63B3/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3167204A
Cited
US3280775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |