US2931290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for extracting liquid from materials which in bulk present foramina
Assignee: Sanderson & Murray Ltd
•
Filing: 1956-10-16
•
Granted: 1960-04-05
•
Expires: 1976-10-16
Abstract
No abstract record available.
Inventors
- 👤 Davidson Maxwell Wingate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:44
CPC Classifications
D; D01; D01B; D01B1/00; D01B1/10; D01B1/48; B; B30; B30B; B30B9/00; B30B9/02; B30B9/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE520254C
Cited
US1738326A
Cited
US1881548A
Cited
DE649837C
Cited
US2272009A
Cited
US2626642A
Cited
FR1000791A
Cited
FR1109447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |