Patent US2993676A successfully refreshed from Google Patents.
US2993676A
Expired / Lapsed
US
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Diaphragm shut off valve
Assignee: Dole Valve Co
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Filing: 1958-04-29
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Granted: 1961-07-25
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Expires: 1978-04-29
Abstract
No abstract record available.
Inventors
- 👤 Robert R Dahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:42
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; F16K31/402; F16K31/404; F16K47/00; F16K47/02; F16K47/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1317563A
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US1595786A
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US2620133A
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US2712324A
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US2815923A
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US2792016A
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US2844352A
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US2826367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |