US2356009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacturing hard metal compositions
Assignee: AMERICAN CUTTING ALLOYS Inc
•
Filing: 1941-08-02
•
Granted: 1944-08-15
•
Expires: 1961-08-02
Abstract
No abstract record available.
Inventors
- 👤 Schwarzkopf Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:13
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/05; C22C1/051; C22C1/053; C22C1/055; Y; Y10; Y10T; Y10T407/00; Y10T407/27
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) | 1947-08-15 | 1948-02-14 | 1948-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-08-15 | 1952-02-14 | 1952-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-08-15 | 1956-02-14 | 1956-08-15 | $7700.00 | Window Closed / Lapsed |