Patent US5381080A successfully refreshed from Google Patents.
US2882937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeding of powder or other fluent materials in substantially equal quantities
Assignee: Rose Brothers Gainsborough Ltd
•
Filing: 1957-01-07
•
Granted: 1959-04-21
•
Expires: 1977-01-07
Abstract
No abstract record available.
Inventors
- 👤 Kay James Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:21
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/30; B65B1/44
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |