US2448243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing magnesium powder by cold rolling and grinding
Assignee: Permanente Metals Corp
•
Filing: 1944-06-15
•
Granted: 1948-08-31
•
Expires: 1964-06-15
Abstract
No abstract record available.
Inventors
- 👤 Harold P Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:24
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/04; Y; Y10; Y10S; Y10S241/00; Y10S241/14; Y10S29/00; Y10S29/027; Y10S29/031
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1559484A
Cited
US1594346A
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US1669649A
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US1930684A
Cited
US2017850A
Cited
CH199000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-31 | 1952-03-01 | 1952-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-31 | 1956-03-01 | 1956-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-31 | 1960-03-01 | 1960-08-31 | $7700.00 | Window Closed / Lapsed |