US3513642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal dust separator
Assignee: Individual
•
Filing: 1968-07-25
•
Granted: 1970-05-26
•
Expires: 1988-07-25
Abstract
No abstract record available.
Inventors
- 👤 Milan S Cornett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:47
CPC Classifications
B; B01; B01D; B01D50/00; B04; B04C; B04C5/00; B04C5/12; B04C5/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1267715A
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US2010128A
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US2222930A
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US2788087A
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US3010579A
Cited
FR1257689A
Cited
US3061098A
Cited
US3162518A
Cited
US3362140A
Cited
US3413776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |