Patent US2712874A successfully refreshed from Google Patents.
US2712874A
Expired / Lapsed
US
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Portable aircraft lifting cradle
Assignee: Lockheed Martin Corp
•
Filing: 1950-05-12
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Granted: 1955-07-12
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Expires: 1970-05-12
Abstract
No abstract record available.
Inventors
- 👤 Robert H Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:21
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/11; B64; B64F; B64F5/00; B64F5/50; Y; Y10; Y10S; Y10S414/00; Y10S414/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1834294A
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US1932596A
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US1953056A
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US2348899A
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US2479623A
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US2454840A
Cited
US2512150A
Cited
US2523734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-11 | 1959-01-10 | 1959-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-11 | 1963-01-10 | 1963-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-11 | 1967-01-10 | 1967-07-12 | $7700.00 | Window Closed / Lapsed |