US3304697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil separator
Assignee: Worthington Corp
•
Filing: 1964-05-21
•
Granted: 1967-02-21
•
Expires: 1984-05-21
Abstract
No abstract record available.
Inventors
- 👤 Melvin A Ramsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:29
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/02; B; B01; B01D; B01D45/00; B01D45/12; F25B2400/00; F25B2400/02
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |