Patent US3198493A successfully refreshed from Google Patents.
US3198493A
Expired / Lapsed
US
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Portable grain aeration device
Assignee: Individual
•
Filing: 1963-06-12
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Granted: 1965-08-03
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Expires: 1983-06-12
Abstract
No abstract record available.
Inventors
- 👤 Eugene G Sukup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:22
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/74; B65D88/742
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1721553A
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US2016268A
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US2702184A
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US2895720A
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US2949843A
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US3077106A
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US3106148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |