US2545205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for reversible pitch propellers
Assignee: Glenn L Martin Co
•
Filing: 1949-05-26
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Granted: 1951-03-13
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Expires: 1969-05-26
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Hill
- 👤 Paul R Coulson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:55
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/303; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |