US2997943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for solvent extraction
Assignee: International Basic Economy Corp
•
Filing: 1957-03-20
•
Granted: 1961-08-29
•
Expires: 1977-03-20
Abstract
No abstract record available.
Inventors
- 👤 Carl W Zies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:55
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/02; B30B9/12; B30B9/26; B30B9/267
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |