Patent US3520518A successfully refreshed from Google Patents.
US3520518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid blending pump
Assignee: OMAR KNEDLIK ENTERPRISES Inc
•
Filing: 1968-08-12
•
Granted: 1970-07-14
•
Expires: 1988-08-12
Abstract
No abstract record available.
Inventors
- 👤 Omar S Knedlik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:24
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/32; B; B01; B01F; B01F25/00; B01F25/60
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |