US2979071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricated ball valve
Assignee: Rockwell Manufacturing Co
•
Filing: 1953-09-11
•
Granted: 1961-04-11
•
Expires: 1973-09-11
Abstract
No abstract record available.
Inventors
- 👤 Robert H Herring
- 👤 Louis L Neubauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:29
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/22; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4379; Y10T137/4442; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18568; Y10T74/18576; Y10T74/18744
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE19445E
Cited
US1874405A
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US2051278A
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US2030458A
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US2086725A
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US2323421A
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US2373628A
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US2333424A
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US2520288A
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US2573177A
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US2505131A
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US2525951A
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US2608377A
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US2663538A
Cited
US2663290A
Cited
US2521127A
Cited
US2738684A
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GB711636A
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US2777664A
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US2788015A
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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) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |