US2927747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helicopter landing gear
Assignee: Individual
•
Filing: 1955-04-28
•
Granted: 1960-03-08
•
Expires: 1975-04-28
Abstract
No abstract record available.
Inventors
- 👤 Ralph F Bennie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:26
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/32; B64C25/52; B64C25/001; B64C2025/008; B64C2025/325
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1308997A
Cited
US1021338A
Cited
US1995241A
Cited
US2101399A
Cited
US2443209A
Cited
US2630989A
Cited
US2587628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |