US2641423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft undercarriage
Assignee: Bell Aircraft Corp
•
Filing: 1951-09-27
•
Granted: 1953-06-09
•
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 08:40
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
Cited
FR420322A
Cited
FR14514E
Cited
US1112731A
Cited
FR442420A
Cited
US1134657A
Cited
GB100532A
Cited
US1508366A
Cited
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 |