US2688140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flush tank valve guide
Assignee: Individual
•
Filing: 1951-11-30
•
Granted: 1954-09-07
•
Expires: 1971-11-30
Abstract
No abstract record available.
Inventors
- 👤 Schlatter Isaac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:36
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/30; E03D1/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US852334A
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US1120836A
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US1190917A
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US1516368A
Cited
US1907193A
Cited
US2135231A
Cited
US2121362A
Cited
US2164996A
Cited
US2626399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |