US2429208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine combustion air control system
Assignee: Curtiss Wright Corp
•
Filing: 1944-04-07
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Granted: 1947-10-21
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Expires: 1964-04-07
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Matthews
- 👤 Jr Robert D Meclure
- 👤 Siroky Edmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:47
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/10006; F02M35/10019; F02M31/00; F02M31/02; F02M31/04; F02M31/06; F02M35/02; F02M35/04; F02M35/10242; F02M35/10255; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86815; Y10T137/86823
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US778332A
Cited
US810877A
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US1295999A
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US2058204A
Cited
US2123347A
Cited
US2208689A
Cited
CH206263A
Cited
US2229931A
Cited
FR848026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-20 | 1951-04-21 | 1951-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-20 | 1955-04-21 | 1955-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-20 | 1959-04-21 | 1959-10-21 | $7700.00 | Window Closed / Lapsed |