US2567071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced valve diaphragm assembly
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1944-10-19
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Granted: 1951-09-04
•
Expires: 1964-10-19
Abstract
No abstract record available.
Inventors
- 👤 Harland E Jacobus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:06
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/02; F15B9/08; F02; F02M; F02M59/00; F16; F16K; F16K15/00; F16K15/02; F16K15/06; F16K15/063; F02M2700/00; F02M2700/13; F02M2700/1317; F16K2200/00; F16K2200/30; F16K2200/303; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7923; Y10T137/7929; Y10T137/7939; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49236; Y10T29/49298
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |