US2930340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amphibious craft
Assignee: Individual
•
Filing: 1956-03-30
•
Granted: 1960-03-29
•
Expires: 1976-03-30
Abstract
No abstract record available.
Inventors
- 👤 Donald W Sessions
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:46
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/02; B63B1/10; B63B1/12; B60; B60F; B60F3/00; B60F3/0061; B60F3/0069; B63C; B63C13/00; B63H; B63H1/00; B63H1/02; B63H1/04; B63H2001/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US75531A
Cited
US1490964A
Cited
FR833199A
Cited
FR49213E
Cited
US2370508A
Cited
US2341165A
Cited
US2376626A
Cited
FR928144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |