US2608971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demand valve control mechanism
Assignee: Bendix Aviation Corp
•
Filing: 1948-11-17
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Granted: 1952-09-02
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Expires: 1968-11-17
Abstract
No abstract record available.
Inventors
- 👤 Bradford B Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:59
CPC Classifications
A; A62; A62B; A62B9/00; A62B9/02; A62B9/022; Y; Y10; Y10S; Y10S137/00; Y10S137/908; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/2012; Y10T137/7722; Y10T137/7781; Y10T137/7782
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1093975A
Cited
US1848232A
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US1926069A
Cited
GB439183A
Cited
DE704049C
Cited
US2220905A
Cited
CH236133A
Cited
US2378047A
Cited
US2383801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |