Patent US3403735A successfully refreshed from Google Patents.
US3403735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable variable pitch propeller
Assignee: CHARLES DI GIOIA
•
Filing: 1967-03-10
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Granted: 1968-10-01
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Expires: 1987-03-10
Abstract
No abstract record available.
Inventors
- 👤 Henrik G Langhjelm
- 👤 Gioia Charles Di
- 👤 Bergishagen Finn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:38
CPC Classifications
B; B63; B63H; B63H3/00; B63H3/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR24707E
Cited
US1750778A
Cited
US1851874A
Cited
US1833843A
Cited
US2097643A
Cited
US2440046A
Cited
US3308889A
Cited
US3275083A
Cited
US3302725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |