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Patent US3412649A successfully refreshed from Google Patents.
US3412649A
Expired / Lapsed
US
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Multi-position vacuum motor
Assignee: Dole Valve Co
•
Filing: 1966-08-05
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Granted: 1968-11-26
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Expires: 1986-08-05
Abstract
No abstract record available.
Inventors
- 👤 Rudolph J Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:42
CPC Classifications
F; F01; F01B; F01B29/00; F01B29/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2495869A
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US2641986A
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US2936785A
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US2969776A
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US3077186A
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US3187640A
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US3199412A
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US3312313A
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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) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |