US3397545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine structure
Assignee: Ingalls Shipbuilding Corp
•
Filing: 1965-10-11
•
Granted: 1968-08-20
•
Expires: 1985-10-11
Abstract
No abstract record available.
Inventors
- 👤 Clyde M Leavitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:44
CPC Classifications
B; B63; B63B; B63B35/00; B63B35/44; B63B35/4413; B63B1/00; B63B1/02; B63B1/10; B63B1/107; B63B21/00; B63B21/50; E; E02; E02B; E02B17/00; E02B17/02; E02B17/021; E02B2017/0056; E02B2017/0073; E02B2017/0082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US919694A
Cited
US1422542A
Cited
US1815286A
Cited
US2973046A
Cited
US3176644A
Cited
US3273526A
Cited
US3246476A
Cited
US3289419A
Cited
US3324401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |