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US2668014A
Expired / Lapsed
US
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Vacuum control
Assignee: Dole Valve Co
•
Filing: 1950-06-24
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Granted: 1954-02-02
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Expires: 1970-06-24
Abstract
No abstract record available.
Inventors
- 👤 James K Lund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:29
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1611554A
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US1764799A
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US1922266A
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US2203477A
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US2213018A
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US2199416A
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US2304642A
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US2463908A
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US2421565A
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US2490919A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |