US2775984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control structure
Assignee: Dole Valve Co
•
Filing: 1953-10-30
•
Granted: 1957-01-01
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Expires: 1973-10-30
Abstract
No abstract record available.
Inventors
- 👤 Robert R Dahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:09
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; G05D7/012; F; F16; F16L; F16L55/00; F16L55/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7869
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CH154109A
Cited
US2389134A
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US2454929A
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US2568519A
Cited
US2572244A
Cited
US2489542A
Cited
US2667900A
Cited
US2662554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |