US2602034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making enameling sheets
Assignee: United States Steel Corp
•
Filing: 1950-01-18
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Granted: 1952-07-01
•
Expires: 1970-01-18
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Eckel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:34
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/46; C21D9/48; C23; C23D; C23D5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1536663A
Cited
US1723152A
Cited
US1857215A
Cited
US2127388A
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US2084336A
Cited
US2381435A
Cited
US2495167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |