Patent US3488996A successfully refreshed from Google Patents.
US3488996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Determination of oil in a flowing stream
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1967-09-07
•
Granted: 1970-01-13
•
Expires: 1987-09-07
Abstract
No abstract record available.
Inventors
- 👤 Raymond H Pfrehm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:00
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/74; G01N; G01N33/00; G01N33/18; G01N33/1826; G01N33/1833; G01N33/26; G01N33/28; G01N33/2823
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2571470A
Cited
US2772567A
Cited
US3006189A
Cited
US3012436A
Cited
US3014362A
Cited
US3081636A
Cited
US3277710A
Cited
US3304766A
Cited
US3385108A
Cited
US3365945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |