Patent US2427439A successfully refreshed from Google Patents.
US2427439A
Expired / Lapsed
US
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Valve
Assignee: Dole Valve Co
•
Filing: 1943-08-27
•
Granted: 1947-09-16
•
Expires: 1963-08-27
Abstract
No abstract record available.
Inventors
- 👤 Clyde A Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:02
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/22; F16K3/24; F16K3/243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US207871A
Cited
US394475A
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US850230A
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US1048364A
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US1824157A
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US2134277A
Cited
US2242467A
Cited
US2314683A
Cited
US2360733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-15 | 1951-03-17 | 1951-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-15 | 1955-03-17 | 1955-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-15 | 1959-03-17 | 1959-09-16 | $7700.00 | Window Closed / Lapsed |