Patent US2750134A successfully refreshed from Google Patents.
US2750134A
Expired / Lapsed
US
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Multiple wheel main landing gear
Assignee: Lockheed Martin Corp
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Filing: 1952-04-17
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Granted: 1956-06-12
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Expires: 1972-04-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Willis M Hawkins
- 👤 Veille Philip E Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:43
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/32; B64C25/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2130914A
Cited
US2487548A
Cited
GB651149A
Cited
US2490485A
Cited
US2579180A
Cited
GB663245A
Cited
US2621004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |