US3439745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined propeller pitch lock and low pitch stop system
Assignee: RTX Corp
•
Filing: 1966-03-30
•
Granted: 1969-04-22
•
Expires: 1986-03-30
Abstract
No abstract record available.
Inventors
- 👤 Leonard L Gaubis
- 👤 Thomas F Mcdonough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:08
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/38; B64C11/385; B63; B63H; B63H3/00; B63H3/06; B63H3/08; B63H3/081; B63H2003/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2635700A
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US2957528A
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US2882975A
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US2992687A
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US3003567A
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US2980188A
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US3102596A
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US3087554A
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US3090445A
Cited
US3207227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |