US2426873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radial aircraft engine
Assignee: RTX Corp
•
Filing: 1944-09-01
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Granted: 1947-09-02
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Expires: 1964-09-01
Abstract
No abstract record available.
Inventors
- 👤 Hasbrouck Augustus
- 👤 Alexander H King
- 👤 Porter Lewis Morgan
- 👤 George L Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:20
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/22; F16F15/24; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02B75/222; F02B2075/1804; F02B2075/1828; F02B73/00
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) | 1950-09-01 | 1951-03-03 | 1951-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-01 | 1955-03-03 | 1955-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-01 | 1959-03-03 | 1959-09-02 | $7700.00 | Window Closed / Lapsed |