US2579172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller pitch reversing control switch
Assignee: Consolidated Vultee Aircraft Corp
•
Filing: 1949-03-31
•
Granted: 1951-12-18
•
Expires: 1969-03-31
Abstract
No abstract record available.
Inventors
- 👤 Lawrence J Bordelon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:51
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/38; B64C11/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US300098A
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US1731391A
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US2155586A
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US2266784A
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US2181829A
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US2298068A
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US2306355A
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US2372102A
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US2468974A
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US2503632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |