US2535110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of heat-treating wheels
Assignee: Carnegie Illinois Steel Corp
•
Filing: 1946-02-28
•
Granted: 1950-12-26
•
Expires: 1966-02-28
Abstract
No abstract record available.
Inventors
- 👤 Harold B Wishart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:39
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB240882A
Cited
US1704327A
Cited
US1740347A
Cited
US1859623A
Cited
US2178281A
Cited
US2146516A
Cited
US2146793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |