Patent US4598341A successfully refreshed from Google Patents.
Patent US2643089A successfully refreshed from Google Patents.
US2643089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unseating structure for rotary plug valves
Assignee: Mueller Co
•
Filing: 1946-10-31
•
Granted: 1953-06-23
•
Expires: 1966-10-31
Abstract
No abstract record available.
Inventors
- 👤 Lucien W Mueller
- 👤 Tratzik Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:47
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/04; F16K5/0457; F16K5/0478; F16K5/08; F16K5/14; F16K5/18; F16K5/184
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US967460A
Cited
US1611844A
Cited
US1679370A
Cited
US1814534A
Cited
US1989009A
Cited
US2063699A
Cited
US2076838A
Cited
US2039220A
Cited
US2076839A
Cited
US2200474A
Cited
US2285222A
Cited
US2438672A
Cited
US2505270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |