Patent US2909342A successfully refreshed from Google Patents.
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 05:28
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/001; B64C2025/008; B64C25/32; B64C2025/325
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB168692A
Cited
US1845797A
Cited
US1685119A
Cited
FR819026A
Cited
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 |