US2728401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw propeller with resilient blade
Assignee: Individual
•
Filing: 1954-01-15
•
Granted: 1955-12-27
•
Expires: 1974-01-15
Abstract
No abstract record available.
Inventors
- 👤 Milton K Brannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:10
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189717054A
Cited
US930409A
Cited
GB121589A
Cited
US2087243A
Cited
US2283088A
Cited
US2473665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |