Patent US2738448A successfully refreshed from Google Patents.
US2738448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric eye for automatically operating flushing valve
Assignee: Individual
•
Filing: 1951-09-27
•
Granted: 1956-03-13
•
Expires: 1971-09-27
Abstract
No abstract record available.
Inventors
- 👤 Bokser Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:04
CPC Classifications
E; E03; E03D; E03D5/00; E03D5/10; Y; Y10; Y10S; Y10S4/00; Y10S4/03
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1711663A
Cited
US1895531A
Cited
US2058668A
Cited
US1985563A
Cited
US2238987A
Cited
US2304207A
Cited
US2339750A
Cited
US2396497A
Cited
US2438207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |