US2548128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal assembly for flow control devices
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1944-05-03
•
Granted: 1951-04-10
•
Expires: 1964-05-03
Abstract
No abstract record available.
Inventors
- 👤 Snyder Jacob Rush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:35
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/04; F16K5/0457; F16K5/0464
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE461446C
Cited
US783953A
Cited
US1049450A
Cited
US1062064A
Cited
US1736261A
Cited
GB296164A
Cited
US1954018A
Cited
US1942155A
Cited
US2035548A
Cited
FR805137A
Cited
US2203989A
Cited
US2291563A
Cited
US2375633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |