Patent US4926230A successfully refreshed from Google Patents.
Patent US2398444A successfully refreshed from Google Patents.
US2398444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug valve closure
Assignee: MERCO NORDSTROM VALVE Co
•
Filing: 1943-12-23
•
Granted: 1946-04-16
•
Expires: 1963-12-23
Abstract
No abstract record available.
Inventors
- 👤 Sven J Nordstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:10
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/22; F16K5/222; F16K5/14; F16K5/16; F16K5/162; F16K5/163; F16K5/166; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4393; Y10T137/44
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-04-15 | 1949-10-15 | 1950-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-04-15 | 1953-10-15 | 1954-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-04-15 | 1957-10-15 | 1958-04-16 | $7700.00 | Window Closed / Lapsed |