Patent US3520312A successfully refreshed from Google Patents.
US3520312A
Expired / Lapsed
US
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Flow process including viscosity control
Assignee: Motors Liquidation Co
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Filing: 1968-04-19
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Granted: 1970-07-14
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Expires: 1988-04-19
Abstract
No abstract record available.
Inventors
- 👤 Tracy R Ackerman
- 👤 John F Schickler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:41
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/40; B01F23/49; F; F02; F02N; F02N15/00; F02M; F02M37/00; F02M37/0047; F02M37/0064; G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/131; G05D11/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3025232A
Cited
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 |