Patent US2998828A successfully refreshed from Google Patents.
US2998828A
Expired / Lapsed
US
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Slide plate type volume control valve
Assignee: DYNEX Inc
•
Filing: 1958-09-08
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Granted: 1961-09-05
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Expires: 1978-09-08
Abstract
No abstract record available.
Inventors
- 👤 Richard C Hare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:13
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/102; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/0655; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/86702; Y10T137/86879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US975240A
Cited
US2074618A
Cited
US2247261A
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US2252141A
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US2536486A
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US2568356A
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FR966043A
Cited
US2617257A
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US2696788A
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US2797706A
Cited
US2858851A
Cited
US2964058A
Cited
US2951505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |