US2986646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control for changing blade angle of adjustable blade turbine
Assignee: Individual
•
Filing: 1954-03-18
•
Granted: 1961-05-30
•
Expires: 1974-03-18
Abstract
No abstract record available.
Inventors
- 👤 Albert P Ding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:19
CPC Classifications
H; H02; H02P; H02P23/00; H02P23/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CA501595A
Cited
US559903A
Cited
US1434158A
Cited
US1545752A
Cited
US1901772A
Cited
US1901771A
Cited
US1901773A
Cited
US2115890A
Cited
US2265952A
Cited
US2310994A
Cited
US2283127A
Cited
US2519599A
Cited
US2551306A
Cited
US2532723A
Cited
CH261190A
Cited
FR1058846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |