Patent US2670913A successfully refreshed from Google Patents.
US2670913A
Expired / Lapsed
US
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Aircraft boom control and balancing mechanism
Assignee: Boeing Co
•
Filing: 1950-04-24
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Granted: 1954-03-02
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Expires: 1970-04-24
Abstract
No abstract record available.
Inventors
- 👤 Castor Thomas Davis
- 👤 Clifford J Leisy
- 👤 William A Sangster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:21
CPC Classifications
B; B64; B64D; B64D39/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1083464A
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US1802226A
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US1818834A
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US1848372A
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US1867902A
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US2124867A
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US2198893A
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US2122778A
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US2257940A
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US2421437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |