Patent US2830743A successfully refreshed from Google Patents.
US2830743A
Expired / Lapsed
US
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Three way valve assembly
Assignee: Dole Valve Co
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Filing: 1956-03-05
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Granted: 1958-04-15
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Expires: 1976-03-05
Abstract
No abstract record available.
Inventors
- 👤 Victor E Rimsha
- 👤 Robert R Dahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:33
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; F16K31/402; F16K31/404; F16K21/00; F16K21/04; F16K21/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1454765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |