Patent US2428585A successfully refreshed from Google Patents.
US2428585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venturi fitting
Assignee: Curtiss Wright Corp
•
Filing: 1943-12-27
•
Granted: 1947-10-07
•
Expires: 1963-12-27
Abstract
No abstract record available.
Inventors
- 👤 Edward E Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:24
CPC Classifications
F; F16; F16L; F16L41/00; F16L41/08; F16L37/00; F16L37/008
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-06 | 1951-04-07 | 1951-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-06 | 1955-04-07 | 1955-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-06 | 1959-04-07 | 1959-10-07 | $7700.00 | Window Closed / Lapsed |