US2665878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball valve
Assignee: Individual
•
Filing: 1950-03-07
•
Granted: 1954-01-12
•
Expires: 1970-03-07
Abstract
No abstract record available.
Inventors
- 👤 Grunt Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:28
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US722322A
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US799203A
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US964804A
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US1237144A
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US1401097A
Cited
US1666283A
Cited
US1891287A
Cited
US2011601A
Cited
US2034367A
Cited
US2139926A
Cited
US2222273A
Cited
US2619367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |