Patent US2894264A successfully refreshed from Google Patents.
US2894264A
Expired / Lapsed
US
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Flush valve guides
Assignee: Individual
•
Filing: 1955-10-31
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Granted: 1959-07-14
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Expires: 1975-10-31
Abstract
No abstract record available.
Inventors
- 👤 Walter Adolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:16
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/30; E03D1/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
AT39861B
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US1460080A
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US1990207A
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US2206235A
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US2483383A
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US2613367A
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US2669772A
Cited
US2736903A
Cited
US2692393A
Cited
US2758314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-13 | 1963-01-12 | 1963-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-13 | 1967-01-12 | 1967-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-13 | 1971-01-12 | 1971-07-14 | $7700.00 | Window Closed / Lapsed |