Patent US2472713A successfully refreshed from Google Patents.
Patent US2439858A successfully refreshed from Google Patents.
US2439858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductor roll
Assignee: Carnegie Illinois Steel Corp
•
Filing: 1943-08-28
•
Granted: 1948-04-20
•
Expires: 1963-08-28
Abstract
No abstract record available.
Inventors
- 👤 Earll R Muddiman
- 👤 William E Winterhalter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:35
CPC Classifications
C; C25; C25D; C25D7/00; C25D7/06; C25D7/0614; C25D7/0657
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US706550A
Cited
GB190212717A
Cited
US1233906A
Cited
US1358205A
Cited
US1805549A
Cited
US1704129A
Cited
US1724676A
Cited
US1952762A
Cited
US2035517A
Cited
US2035312A
Cited
GB513220A
Cited
US2266347A
Cited
US2341157A
Cited
US8203253B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |