US2424034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tin-plate brightening apparatus
Assignee: Crucible Steel Company of America
•
Filing: 1943-02-04
•
Granted: 1947-07-15
•
Expires: 1963-02-04
Abstract
No abstract record available.
Inventors
- 👤 Hopper Edward William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:41
CPC Classifications
C; C23; C23C; C23C2/00; C25; C25D; C25D5/00; C25D5/48; C25D5/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1068411A
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US1864490A
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US2162692A
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US2171437A
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US2192303A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |