US3504686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid blending system
Assignee: Phillips Petroleum Co
•
Filing: 1967-10-09
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Granted: 1970-04-07
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Expires: 1987-10-09
Abstract
No abstract record available.
Inventors
- 👤 Delbert J Cooper
- 👤 George F Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:19
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/40; B01F23/49; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/8593; Y10T137/85978; Y10T137/86035; Y10T137/86043; Y10T137/86381
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-06 | 1973-10-06 | 1974-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-06 | 1977-10-06 | 1978-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-06 | 1981-10-06 | 1982-04-07 | $7700.00 | Window Closed / Lapsed |