US3384337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low friction sealed and low torque actuated trunnion mounted valve
Assignee: Otis Engineering Corp
•
Filing: 1964-10-22
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Granted: 1968-05-21
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Expires: 1984-10-22
Abstract
No abstract record available.
Inventors
- 👤 Norman F Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:48
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/20; F16K5/201; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4372; Y10T137/598; Y10T137/6031; Y10T137/6035; Y10T137/6058; Y10T137/6089
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2191232A
Cited
GB655078A
Cited
US2799470A
Cited
US2866213A
Cited
DE1102510B
Cited
US3132837A
Cited
US3171429A
Cited
US3214131A
Cited
US3209778A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |