Patent US2850106A successfully refreshed from Google Patents.
US2850106A
Expired / Lapsed
US
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Reversible and variable pitch propeller
Assignee: Individual
•
Filing: 1955-10-05
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Granted: 1958-09-02
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Expires: 1975-10-05
Abstract
No abstract record available.
Inventors
- 👤 Swan Aldon Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:27
CPC Classifications
B; B63; B63H; B63H3/00; B63H3/02; B63H3/04; B63H20/00; B63H20/14; B63H20/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB389796A
Cited
US1977077A
Cited
US1980601A
Cited
US2308749A
Cited
US2478244A
Cited
US2542682A
Cited
US2689541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |