US2501536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting machine
Assignee: Tennessee Coal Iron and Railroad Co
•
Filing: 1945-04-21
•
Granted: 1950-03-21
•
Expires: 1965-04-21
Abstract
No abstract record available.
Inventors
- 👤 Robert H Orr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:22
CPC Classifications
B; B22; B22D; B22D15/00; B22D15/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US380625A
Cited
US1107904A
Cited
US1535247A
Cited
US1793314A
Cited
US1961941A
Cited
US1925497A
Cited
US1942919A
Cited
US1914031A
Cited
US2115590A
Cited
US2121280A
Cited
US2118195A
Cited
US2252697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |