Patent US2231858A successfully refreshed from Google Patents.
US2231858A
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US
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Engine throttle control
Assignee: Glenn L Martin Co
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Filing: 1940-02-24
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Granted: 1941-02-11
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Expires: 1960-02-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick C Domina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:56
CPC Classifications
B; B64; B64D; B64D31/00; B64D31/02; B64D31/04; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-02-11 | 1944-08-12 | 1945-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-11 | 1948-08-12 | 1949-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-11 | 1952-08-12 | 1953-02-11 | $7700.00 | Window Closed / Lapsed |