US2492024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet piler
Assignee: Tennessee Coal Iron and Railroad Co
•
Filing: 1945-12-12
•
Granted: 1949-12-20
•
Expires: 1965-12-12
Abstract
No abstract record available.
Inventors
- 👤 John W Mcwilliams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:13
CPC Classifications
B; B21; B21B; B21B39/00; B21B39/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1135454A
Cited
US2000273A
Cited
US2183798A
Cited
US2323174A
Cited
US2341793A
Cited
US2273689A
Cited
US2332863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |