Patent US3442286A successfully refreshed from Google Patents.
US3442286A
Expired / Lapsed
US
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Lubricated gate valve having line load bearing capability
Assignee: ACF Industries Inc
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Filing: 1965-01-25
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Granted: 1969-05-06
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Expires: 1985-01-25
Abstract
No abstract record available.
Inventors
- 👤 Clifford E Anderson
- 👤 William E Lowrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:16
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/30; F16K3/36; F16K27/00; F16K27/10; F16K27/105; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4442
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) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |