US2440713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyroscopic control apparatus for air and other craft
Assignee: Individual
•
Filing: 1944-09-18
•
Granted: 1948-05-04
•
Expires: 1964-09-18
Abstract
No abstract record available.
Inventors
- 👤 Brown John Pollock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:36
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808; G05D1/0816; G05D1/085; B; B63; B63H; B63H25/00; B63H25/02; B63H25/04; G01; G01C; G01C19/00; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-04 | 1951-11-03 | 1952-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-04 | 1955-11-03 | 1956-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-04 | 1959-11-03 | 1960-05-04 | $7700.00 | Window Closed / Lapsed |