US2459674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous tinplate brightening apparatus
Assignee: Individual
•
Filing: 1939-12-30
•
Granted: 1949-01-18
•
Expires: 1959-12-30
Abstract
No abstract record available.
Inventors
- 👤 John S Nachtman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:48
CPC Classifications
C; 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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US1355521A
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US1683129A
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US1890065A
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US1811522A
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US2078868A
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US2009856A
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US2240265A
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US2357126A
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US2141382A
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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) | 1952-01-18 | 1952-07-19 | 1953-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-18 | 1956-07-19 | 1957-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-18 | 1960-07-19 | 1961-01-18 | $7700.00 | Window Closed / Lapsed |