US2977772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ice level sensing mechanism
Assignee: Dole Valve Co
•
Filing: 1960-01-04
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Granted: 1961-04-04
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Expires: 1980-01-04
Abstract
No abstract record available.
Inventors
- 👤 Robert H Dawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:49
CPC Classifications
F; F25; F25C; F25C5/00; F25C5/18; F25C5/182; F25C5/187
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2685952A
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US2421819A
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US2620933A
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US2717495A
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US2778198A
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US2836038A
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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) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |