US2635699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller control means
Assignee: RTX Corp
•
Filing: 1949-02-21
•
Granted: 1953-04-21
•
Expires: 1969-02-21
Abstract
No abstract record available.
Inventors
- 👤 Nelson R Richmond
- 👤 Maurice J Levy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:42
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/303
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE22034E
Cited
US719283A
Cited
US1147820A
Cited
US1106434A
Cited
US1375269A
Cited
US1291566A
Cited
US1465723A
Cited
US1695159A
Cited
US2030986A
Cited
US1990814A
Cited
US2017086A
Cited
US2023785A
Cited
US2192790A
Cited
US2146401A
Cited
US2128983A
Cited
US2163663A
Cited
GB476852A
Cited
US2145850A
Cited
US2229058A
Cited
US2221365A
Cited
US2280713A
Cited
GB499634A
Cited
US2232838A
Cited
GB517696A
Cited
US2279301A
Cited
US2243095A
Cited
US2307102A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |