US2753005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tiltable rotor unit with counterrotating propellers
Assignee: Individual
•
Filing: 1951-12-29
•
Granted: 1956-07-03
•
Expires: 1971-12-29
Abstract
No abstract record available.
Inventors
- 👤 Adolphe C Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:17
CPC Classifications
B; B64; B64D; B64D35/00; B64D35/08; B64D35/04; B64D35/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1806648A
Cited
USRE22029E
Cited
US1189680A
Cited
US1414241A
Cited
US1681019A
Cited
US1842613A
Cited
US1795334A
Cited
US1788430A
Cited
US1916092A
Cited
US2461669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |