US2431565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for working particles for production of metal powders or pastes
Assignee: Alcoa Corp
•
Filing: 1943-05-19
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Granted: 1947-11-25
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Expires: 1963-05-19
Abstract
No abstract record available.
Inventors
- 👤 Peter I Klock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:45
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/04; Y; Y10; Y10T; Y10T29/00; Y10T29/30; Y10T29/301
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) | 1950-11-24 | 1951-05-26 | 1951-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-24 | 1955-05-26 | 1955-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-24 | 1959-05-26 | 1959-11-25 | $7700.00 | Window Closed / Lapsed |