Patent US3463450A successfully refreshed from Google Patents.
US3463450A
Expired / Lapsed
US
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Fabricated plug for spherical plug valve
Assignee: ACF Industries Inc
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Filing: 1967-08-25
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Granted: 1969-08-26
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Expires: 1987-08-25
Abstract
No abstract record available.
Inventors
- 👤 Madden T Works
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:34
CPC Classifications
F; F16; F16K; F16K39/00; F16K39/06; F16K27/00; F16K27/06; F16K27/067; F16K5/00; F16K5/06; F16K5/0626; F16K5/0642; F16K5/0663; F16K5/0673; F16K5/08; F16K5/14; F16K5/20; F16K5/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |