Patent US1904432A successfully refreshed from Google Patents.
US1904432A
Expired / Lapsed
US
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Method of electrodepositing chromium
Assignee: CHEMICAL TREAT Co Inc
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Filing: 1926-07-27
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Granted: 1933-04-18
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Expires: 1946-07-27
Abstract
No abstract record available.
Inventors
- 👤 Colin G Fink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:03
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/02; C25D7/00; C25D7/04; C25D3/00; C25D3/02; C25D3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-04-17 | 1936-10-17 | 1937-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-04-17 | 1940-10-17 | 1941-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-04-17 | 1944-10-17 | 1945-04-18 | $7700.00 | Window Closed / Lapsed |