US2731033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air control valve
Assignee: Bendix Aviation Corp
•
Filing: 1953-04-06
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Granted: 1956-01-17
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Expires: 1973-04-06
Abstract
No abstract record available.
Inventors
- 👤 Walter L Cable
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:34
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/10; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7794; Y10T137/7801; Y10T137/7809; Y10T137/7812; Y10T137/7818; Y10T137/7819; Y10T137/7822; Y10T137/7823; Y10T137/7826; Y10T137/794
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE254511C
Cited
US1184761A
Cited
US1637764A
Cited
US1821272A
Cited
US1962520A
Cited
US2305975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |