US2399460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiselector valve mechanism
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1944-02-03
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Granted: 1946-04-30
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Expires: 1964-02-03
Abstract
No abstract record available.
Inventors
- 👤 Karl B Britton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:32
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16K11/20; F16K11/22; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8259; Y10T137/8593; Y10T137/87048; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19874; Y10T74/20; Y10T74/20012
Claims Analysis
Total Claims: 0
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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) | 1949-04-29 | 1949-10-29 | 1950-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-04-29 | 1953-10-29 | 1954-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-04-29 | 1957-10-29 | 1958-04-30 | $7700.00 | Window Closed / Lapsed |