US3476522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High viscosity reactors
Assignee: Crawford and Russell Inc
•
Filing: 1966-11-16
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Granted: 1969-11-04
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Expires: 1986-11-16
Abstract
No abstract record available.
Inventors
- 👤 William B Stovall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:33
CPC Classifications
B; B01; B01J; B01J10/00; B01J10/02; B01F; B01F27/00; B01F27/05; B01F27/09; B01F27/091; B01F27/80; B01F27/92; B01F27/921; B01F27/9211; B01F35/00; B01F35/90; B01F35/93; B01J19/00; B01J19/18; B01J19/1887; B01J19/20; B01F35/50; B01F35/53; B01F35/531; B01J2219/00; B01J2219/00761; B01J2219/00763; B01J2219/00779
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US737973A
Cited
US3206287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |