US2909342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Landing gear for helicopters
Assignee: Menasco Manufacturing Co
•
Filing: 1954-06-04
•
Granted: 1959-10-20
•
Expires: 1974-06-04
Abstract
No abstract record available.
Inventors
- 👤 Lewis J Maltby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:00
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/001; B64C2025/008; B64C25/32; B64C2025/325
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB168692A
Cited
US1845797A
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US1685119A
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FR819026A
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US2260102A
Cited
US2318259A
Cited
US2366995A
Cited
US2347959A
Cited
US2520266A
Cited
GB618914A
Cited
DE818734C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |