US2566873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid control system
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1944-03-31
•
Granted: 1951-09-04
•
Expires: 1964-03-31
Abstract
No abstract record available.
Inventors
- 👤 Karl B Britton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:56
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; B; B64; B64D; B64D37/00; B64D37/02; B64D37/14; B64D37/20; Y; Y10; Y10T; Y10T137/00; Y10T137/4673; Y10T137/4857; Y10T137/8158; Y10T137/8175; Y10T137/8593; Y10T137/86493; Y10T137/86501
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1303290A
Cited
US1356598A
Cited
US1266627A
Cited
US1408611A
Cited
US1329997A
Cited
US1976445A
Cited
US1988841A
Cited
US1897303A
Cited
US2057834A
Cited
US2140667A
Cited
US2250453A
Cited
US2268957A
Cited
US2327373A
Cited
US2341538A
Cited
US2329661A
Cited
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 |