US2770872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marked electrolytic tinplate and method for producing same
Assignee: National Steel Corp
•
Filing: 1952-04-10
•
Granted: 1956-11-20
•
Expires: 1972-04-10
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Kadell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:28
CPC Classifications
B; B41; B41F; B41F17/00; B41F17/08; B41F17/10; C; C25; C25D; C25D7/00; C25D7/06; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/925; Y10S428/9265; Y10S428/927; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12201; Y10T428/12389; Y10T428/12396; Y10T428/12493; Y10T428/12708; Y10T428/12722; Y10T428/12993
Claims Analysis
Total Claims: 0
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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) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |