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Patent US2437814A successfully refreshed from Google Patents.
US2437814A
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Assignee: Lockheed Martin Corp
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Filing: 1944-05-25
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Granted: 1948-03-16
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Expires: 1964-05-25
Abstract
No abstract record available.
Inventors
- 👤 Robert O Hallen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:27
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/56; F16J15/16; F16J15/166
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1338871A
Cited
US2115383A
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US2106293A
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US2232293A
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US2349170A
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US2360735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-16 | 1951-09-15 | 1952-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-16 | 1955-09-15 | 1956-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-16 | 1959-09-15 | 1960-03-16 | $7700.00 | Window Closed / Lapsed |