US2237306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Angle-of-attack indicator
Assignee: Individual
•
Filing: 1939-09-09
•
Granted: 1941-04-08
•
Expires: 1959-09-09
Abstract
No abstract record available.
Inventors
- 👤 Manley J Hood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:12
CPC Classifications
B; B64; B64D; B64D43/00; B64D43/02; B64C; B64C9/00; B64C9/32; B64D27/00; B64D27/02; B64D27/023; G; G01; G01C; G01C9/00; G01C9/005; G01P; G01P5/00; G01P5/14; G01P5/16; G01P5/17; G01P5/175
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-04-07 | 1944-10-07 | 1945-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-07 | 1948-10-07 | 1949-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-07 | 1952-10-07 | 1953-04-08 | $7700.00 | Window Closed / Lapsed |