US2463905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic control system for airplanes
Assignee: Individual
•
Filing: 1946-03-15
•
Granted: 1949-03-08
•
Expires: 1966-03-15
Abstract
No abstract record available.
Inventors
- 👤 Porton Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:57
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808; G05D1/0816; G05D1/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1326945A
Cited
US1418335A
Cited
US1794690A
Cited
US1918082A
Cited
US1904801A
Cited
US2066194A
Cited
US2234326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |