US3458172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball valve
Assignee: Dresser Industries Inc
•
Filing: 1966-05-26
•
Granted: 1969-07-29
•
Expires: 1986-05-26
Abstract
No abstract record available.
Inventors
- 👤 Lewis M Burrows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:39
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0626; F16K5/0636; F16K27/00; F16K27/06; F16K27/067; F16K5/0621; F16K5/0663; F16K5/0694; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6031; Y10T137/6035; Y10T137/6038; Y10T137/6089
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2573177A
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US2817545A
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US2777664A
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US2696967A
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US2890856A
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US2946552A
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US3047007A
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US2984449A
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US3151837A
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US3186681A
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US3259358A
Cited
US3218024A
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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) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |