US2985191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball valve
Assignee: BECKETT HARCUM CO
•
Filing: 1957-06-19
•
Granted: 1961-05-23
•
Expires: 1977-06-19
Abstract
No abstract record available.
Inventors
- 👤 Donald E Beckett
- 👤 William N Beckett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:48
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/061; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86638; Y10T137/86646
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1677242A
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US2297161A
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US2535580A
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US2792196A
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US2845949A
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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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |