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US2430304A
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Anodizing iron group metals in lead sulfamate bath
Assignee: EIDP Inc
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Filing: 1942-10-03
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Granted: 1947-11-04
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Expires: 1962-10-03
Abstract
No abstract record available.
Inventors
- 👤 Ernest W Schweikher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:30
CPC Classifications
C; C25; C25D; C25D9/00; C25D9/04; C25D9/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2318592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-03 | 1951-05-05 | 1951-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-03 | 1955-05-05 | 1955-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-03 | 1959-05-05 | 1959-11-04 | $7700.00 | Window Closed / Lapsed |