Patent US2641423A successfully refreshed from Google Patents.
US2641423A
Expired / Lapsed
US
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Aircraft undercarriage
Assignee: Bell Aircraft Corp
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Filing: 1951-09-27
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Granted: 1953-06-09
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Expires: 1971-09-27
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Harriman
- 👤 Francis P Bassett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:26
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/32; B64C25/52; B64C2025/325
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US665184A
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FR420322A
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FR14514E
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US1112731A
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FR442420A
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US1134657A
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GB100532A
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US1508366A
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GB274167A
Cited
US1752416A
Cited
US2493296A
Cited
US2534206A
Cited
US2498976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |