Patent US3270684A successfully refreshed from Google Patents.
Patent US2454431A successfully refreshed from Google Patents.
US2454431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double-action flush valve lever
Assignee: CRAMPTON Manufacturing CO
•
Filing: 1945-02-05
•
Granted: 1948-11-23
•
Expires: 1965-02-05
Abstract
No abstract record available.
Inventors
- 👤 Basil R Crampton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:12
CPC Classifications
E; E03; E03D; E03D5/00; E03D5/02; E03D5/09; E03D5/092
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) | 1951-11-23 | 1952-05-24 | 1952-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-23 | 1956-05-24 | 1956-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-23 | 1960-05-24 | 1960-11-23 | $7700.00 | Window Closed / Lapsed |