US2945668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug valves
Assignee: Rockwell Manufacturing Co
•
Filing: 1955-08-03
•
Granted: 1960-07-19
•
Expires: 1975-08-03
Abstract
No abstract record available.
Inventors
- 👤 Charles V Staller
- 👤 Nick W Kish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:03
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/22; F16K5/222; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4393; Y10T137/4421
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1507828A
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US1469762A
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US1574925A
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US2048884A
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US2349170A
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US2427789A
Cited
US2651490A
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US2573238A
Cited
US2630294A
Cited
US2707613A
Cited
US2767729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |