US2097147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extraction with solvents
Assignee: JAMES H BELL
•
Filing: 1937-01-05
•
Granted: 1937-10-26
•
Expires: 1957-01-05
Abstract
No abstract record available.
Inventors
- 👤 Clarence F Dinley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:00
CPC Classifications
C; C11; C11B; C11B1/00; C11B1/10; C11B1/102
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-10-25 | 1941-04-26 | 1941-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-10-25 | 1945-04-26 | 1945-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-10-25 | 1949-04-26 | 1949-10-26 | $7700.00 | Window Closed / Lapsed |