US2475945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of chemically coating metallic articles of aluminum or predominantly of aluminm and solution for use therein
Assignee: Canadian Copper Refiners Ltd
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Filing: 1946-09-21
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Granted: 1949-07-12
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Expires: 1966-09-21
Abstract
No abstract record available.
Inventors
- 👤 Charles W Clark
- 👤 Collins Thomas Garnet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:36
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/07; C23C22/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-11 | 1953-01-10 | 1953-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-11 | 1957-01-10 | 1957-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-11 | 1961-01-10 | 1961-07-12 | $7700.00 | Window Closed / Lapsed |