US3481474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal fluid strainer
Assignee: Universal Oil Products Co
•
Filing: 1967-08-04
•
Granted: 1969-12-02
•
Expires: 1987-08-04
Abstract
No abstract record available.
Inventors
- 👤 Rueben E Paulson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:12
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/114; B01D29/115; B01D29/44; B01D29/48; B01D29/50; B01D29/52; B01D29/76; B01D29/88; B01D29/90; B01D29/908; B01D29/94
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1040342A
Cited
US2208077A
Cited
US2198819A
Cited
US2321120A
Cited
US2658618A
Cited
US3061098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |