Patent US2917273A successfully refreshed from Google Patents.
US2917273A
Expired / Lapsed
US
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Gear-actuated reciprocating valve construction
Assignee: Individual
•
Filing: 1955-06-06
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Granted: 1959-12-15
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Expires: 1975-06-06
Abstract
No abstract record available.
Inventors
- 👤 Clarence A Best
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:02
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/53; F16K31/54; F16K27/00; F16K27/02; Y; Y10; Y10T; Y10T137/00; Y10T137/5109; Y10T137/598; Y10T137/6161; Y10T137/6164; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7923
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US660193A
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US702342A
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US827521A
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US942972A
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US1218877A
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US2078402A
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US2186499A
Cited
US2765143A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |