US2550774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lump-breaker roll for papermaking machines
Assignee: Rice Barton Corp
•
Filing: 1946-06-22
•
Granted: 1951-05-01
•
Expires: 1966-06-22
Abstract
No abstract record available.
Inventors
- 👤 Everett W Clem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:50
CPC Classifications
D; D21; D21F; D21F3/00; D21F3/02; D21F3/06; Y; Y10; Y10S; Y10S425/00; Y10S425/235; Y10T; Y10T74/00; Y10T74/19; Y10T74/1956; Y10T74/19565; Y10T74/1957
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US582802A
Cited
US1953060A
Cited
US1911434A
Cited
US2220853A
Cited
US2271351A
Cited
US2354174A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |