US2983384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuging and lubricant-purifying device
Assignee: Individual
•
Filing: 1958-05-07
•
Granted: 1961-05-09
•
Expires: 1978-05-07
Abstract
No abstract record available.
Inventors
- 👤 Charles A Winslow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:01
CPC Classifications
F; F16; F16N; F16N39/00; F16N39/002; B; B01; B01D; B01D21/00; B01D21/26; B01D21/267; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D29/88; B01D29/90; B01D29/902; B01D29/908; B01D29/94; B01D35/00; B01D36/00; B01D36/001; B04; B04B; B04B5/00; B04B5/005; F01; F01M; F01M1/00; F01M1/10; F01M2001/1028; F01M2001/1035
Claims Analysis
Total Claims: 0
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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) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |