US2967539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug valve
Assignee: Hays Manufacturing Co
•
Filing: 1957-04-08
•
Granted: 1961-01-10
•
Expires: 1977-04-08
Abstract
No abstract record available.
Inventors
- 👤 James G Bradbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:03
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/22; F16K5/222; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/7069
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2505138A
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US2699798A
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US2760515A
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US2807511A
Cited
US2829668A
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US2898081A
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US2844162A
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US2868221A
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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) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |