Patent US2687276A successfully refreshed from Google Patents.
US2687276A
Expired / Lapsed
US
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Cushioning structure for valves and the like
Assignee: BYRON H STAATS
•
Filing: 1949-12-03
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Granted: 1954-08-24
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Expires: 1969-12-03
Abstract
No abstract record available.
Inventors
- 👤 Grover J Hornsby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:02
CPC Classifications
F; F16; F16K; F16K47/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US765200A
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US764877A
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US1218030A
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US1684220A
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US2280757A
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US2395633A
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US2431769A
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US2514838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |