Patent US2776812A successfully refreshed from Google Patents.
US2776812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm for flush valves
Assignee: Sloan Valve Co
•
Filing: 1952-10-31
•
Granted: 1957-01-08
•
Expires: 1972-10-31
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Colendar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:47
CPC Classifications
E; E03; E03D; E03D3/00; E03D3/02; E03D3/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE20576E
Cited
US1771410A
Cited
US2038135A
Cited
US2049521A
Cited
US2035693A
Cited
US1939911A
Cited
US2302930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |