US3006189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow recorder
Assignee: Shell USA Inc
•
Filing: 1956-06-25
•
Granted: 1961-10-31
•
Expires: 1976-06-25
Abstract
No abstract record available.
Inventors
- 👤 William J Warren
- 👤 Roger L Wixson
- 👤 Fred C Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:05
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/22; G01N27/223; G01F; G01F15/00; G01F15/02; G01F15/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2435043A
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US2598681A
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US2617299A
Cited
US2535027A
Cited
US2607828A
Cited
US2866336A
Cited
US2906948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |