US2921279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Barometric altitude rate control
Assignee: Bendix Aviation Corp
•
Filing: 1954-05-20
•
Granted: 1960-01-12
•
Expires: 1974-05-20
Abstract
No abstract record available.
Inventors
- 👤 James R Cosby
- 👤 Frank O Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:37
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607; G01; G01L; G01L9/00; G01L9/0082; G01L9/0085; G01P; G01P3/00; G01P3/62; Y; Y10; Y10S; Y10S73/00; Y10S73/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE20263E
Cited
US2347134A
Cited
US2251954A
Cited
US2361790A
Cited
US2614244A
Cited
US2564221A
Cited
US2605695A
Cited
US2640971A
Cited
US2657350A
Cited
US2814312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |