Patent US2502335A successfully refreshed from Google Patents.
US2502335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flush valve
Assignee: Individual
•
Filing: 1945-05-14
•
Granted: 1950-03-28
•
Expires: 1965-05-14
Abstract
No abstract record available.
Inventors
- 👤 Edgar F Metzger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:32
CPC Classifications
E; E03; E03D; E03D3/00; E03D3/02; E03D3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US613802A
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DE584025C
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US953484A
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US1501331A
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US1556442A
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DE625027C
Cited
US1998155A
Cited
FR787840A
Cited
US2227907A
Cited
US2204191A
Cited
US2388868A
Cited
US2369104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |