Patent US3442379A successfully refreshed from Google Patents.
US3442379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air suction separator for harvesters
Assignee: Lockwood Corp
•
Filing: 1966-08-11
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Granted: 1969-05-06
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Expires: 1986-08-11
Abstract
No abstract record available.
Inventors
- 👤 Fred W Schneider
- 👤 Willard E Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:23
CPC Classifications
A; A01; A01D; A01D33/00; A01D33/04; B; B07; B07B; B07B4/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2899139A
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US989233A
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US1720666A
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US2095385A
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US2138529A
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US2643768A
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US2653712A
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US2717077A
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US3005547A
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US3227276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |