US3123145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller with selectively variable pitch
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
•
Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:31
CPC Classifications
B; B63; B63H; B63H3/00; B63H3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FI27417A
Cited
US787084A
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US794010A
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US945663A
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GB171057A
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US1769801A
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GB367265A
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US2228524A
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US2164485A
Cited
US2564605A
Cited
US2642730A
Cited
US2605850A
Cited
US2653459A
Cited
US2633923A
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US2773365A
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US2772586A
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US3077228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |