US3567334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow-through propeller
Assignee: Michigan Wheel Corp
•
Filing: 1968-09-09
•
Granted: 1971-03-02
•
Expires: 1988-09-09
Abstract
Abstract A MARINE PROPELLER ASSEMBLY OF THE EXHAUST FLOWTHROUGH TYPE, HAVING ANNULAR EXHAUST-FLOW-ALTERING PROTRUSION MEANS EXTENDING RADIALLY INTO THE FLOW THROUGH EXHAUST PASSAGE, CREATING A CENTURI TYPE STRUCTURE, AND HAVING A SPECIALLY TAPERED TERMINAL DISCHARGE PORTION, IMPROVING PERFORMANCE.
Inventors
- 👤 Eldon L Lorenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:34
CPC Classifications
B; B63; B63H; B63H20/00; B63H20/24; B63H20/245
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |