Patent US2989988A successfully refreshed from Google Patents.
US2989988A
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Fluid flow control valve
Assignee: Bruner Corp
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Filing: 1958-03-17
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Granted: 1961-06-27
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Expires: 1978-03-17
Abstract
No abstract record available.
Inventors
- 👤 Rudelick John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:50
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42; F; F16; F16K; F16K31/00; F16K31/02; F16K31/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86445; Y10T137/86453; Y10T137/86493; Y10T137/86879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2704554A
Cited
US2235287A
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US2631811A
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US2810435A
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US2845092A
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US2893485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |