Patent US2751981A successfully refreshed from Google Patents.
US2751981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet forming and stacking apparatus
Assignee: Armour and Co
•
Filing: 1951-05-31
•
Granted: 1956-06-26
•
Expires: 1971-05-31
Abstract
No abstract record available.
Inventors
- 👤 James R Hawkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:56
CPC Classifications
B; B65; B65H; B65H35/00; B24; B24D; B24D11/00; B24D11/008; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2033; Y10T83/2037; Y10T83/2046; Y10T83/2048; Y10T83/2074; Y10T83/2087; Y10T83/2092; Y10T83/465; Y10T83/4699; Y10T83/4702; Y10T83/4766; Y10T83/4795; Y10T83/4847
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US376025A
Cited
US846716A
Cited
US922918A
Cited
US1301964A
Cited
US1380710A
Cited
US1569032A
Cited
US1722559A
Cited
US1567706A
Cited
US1826889A
Cited
US1938110A
Cited
US1957559A
Cited
US2134310A
Cited
US2545667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-26 | 1959-12-26 | 1960-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-26 | 1963-12-26 | 1964-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-26 | 1967-12-26 | 1968-06-26 | $7700.00 | Window Closed / Lapsed |