US2980047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submarine vessel equipped with hydrofoil assembly
Assignee: Individual
•
Filing: 1957-08-02
•
Granted: 1961-04-18
•
Expires: 1977-08-02
Abstract
No abstract record available.
Inventors
- 👤 Korganoff Alexandre
- 👤 Schlung Hans Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:03
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/28; B63B1/30; B63B1/26; B63G; B63G8/00; B63G8/14; B63G8/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1112405A
Cited
US1024067A
Cited
US1410876A
Cited
GB458111A
Cited
US2081868A
Cited
DE888515C
Cited
US2720367A
Cited
US2795202A
Cited
US2856877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |