US2658528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for providing a restricted passage in a fluid conduit
Assignee: ZF International UK Ltd
•
Filing: 1949-08-12
•
Granted: 1953-11-10
•
Expires: 1969-08-12
Abstract
No abstract record available.
Inventors
- 👤 Ifield Richard Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:16
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/02; F16L55/027; F16L55/02772
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1879197A
Cited
US1980052A
Cited
US2265888A
Cited
US2312834A
Cited
US2323115A
Cited
US2460407A
Cited
US2532019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |