US2858196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extraction apparatus
Assignee: Individual
•
Filing: 1945-09-18
•
Granted: 1958-10-28
•
Expires: 1965-09-18
Abstract
No abstract record available.
Inventors
- 👤 Albert E Ballard
- 👤 Harlow R Brigham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:10
CPC Classifications
B; B01; B01F; B01F21/00; B01F21/10; B01F35/00; B01F35/30; B01F2035/35; B01F2035/351
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |