US3441088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic propeller by compound reaction
Assignee: Individual
•
Filing: 1967-08-23
•
Granted: 1969-04-29
•
Expires: 1987-08-23
Abstract
No abstract record available.
Inventors
- 👤 Felix Levy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:10
CPC Classifications
B; B63; B63H; B63H5/00; B63H5/07; B63H5/14; B63H11/00; B63H11/02; B63H11/04; B63H11/08; B64; B64C; B64C11/00; B64C11/005; B63H1/00; B63H1/02; B63H1/12; B63H2001/122; B63H2001/127; B63H23/00; B63H2023/005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US541480A
Cited
DE351450C
Cited
US1814175A
Cited
GB421528A
Cited
US2320451A
Cited
US3011561A
Cited
US3050007A
Cited
US3071194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |