Patent US2644124A successfully refreshed from Google Patents.
US2644124A
Expired / Lapsed
US
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400 cycle electrohydraulic steering system for guided missiles
Assignee: United States Department of the Navy
•
Filing: 1948-01-23
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Granted: 1953-06-30
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Expires: 1968-01-23
Abstract
No abstract record available.
Inventors
- 👤 John H Broadbent
- 👤 Harold E Ober
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:52
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/30; F41G7/301; G; G05; G05D; G05D1/00; G05D1/10; G05D1/107; G05D1/108
Claims Analysis
Total Claims: 0
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US2459457A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |