US2418213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slab marking device
Assignee: Carnegie Illinois Steel Corp
•
Filing: 1944-06-20
•
Granted: 1947-04-01
•
Expires: 1964-06-20
Abstract
No abstract record available.
Inventors
- 👤 Winterkamp Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:07
CPC Classifications
B; B44; B44B; B44B5/00; B44B5/0004; B44B5/0033
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US805360A
Cited
US807850A
Cited
US933733A
Cited
US1348074A
Cited
DE342727C
Cited
US1832732A
Cited
US1896556A
Cited
US2036502A
Cited
US2029651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-31 | 1950-09-30 | 1951-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-31 | 1954-09-30 | 1955-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-31 | 1958-09-30 | 1959-04-01 | $7700.00 | Window Closed / Lapsed |