US3474596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for transporting viscous fluids
Assignee: Shell USA Inc
•
Filing: 1968-01-24
•
Granted: 1969-10-28
•
Expires: 1988-01-24
Abstract
No abstract record available.
Inventors
- 👤 Paul R Scott
- 👤 Ronald F Scheuerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:44
CPC Classifications
F; F17; F17D; F17D1/00; F17D1/08; F17D1/16; F17D1/18; E; E21; E21B; E21B43/00; E21B43/34; Y; Y10; Y10S; Y10S208/00; Y10S208/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2899373A
Cited
US2165432A
Cited
US2900327A
Cited
US2758665A
Cited
US2773556A
Cited
US3271472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |