US2936788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control system
Assignee: Dole Valve Co
•
Filing: 1955-04-26
•
Granted: 1960-05-17
•
Expires: 1975-04-26
Abstract
No abstract record available.
Inventors
- 👤 Robert R Dahl
- 👤 Howard L Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:18
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; G05D7/012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US624062A
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US1084883A
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US1271758A
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US1709217A
Cited
US1777522A
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US1993895A
Cited
US2454929A
Cited
US2485555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |