US2446637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for melting brass chips
Assignee: Chase Brass and Copper Co Inc
•
Filing: 1945-11-08
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Granted: 1948-08-10
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Expires: 1965-11-08
Abstract
No abstract record available.
Inventors
- 👤 Donald K Crampton
- 👤 Paul E Petersen
- 👤 Maurice L Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:29
CPC Classifications
C; C22; C22B; C22B7/00; C22B7/001; C22B7/003; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/122; Y02P10/20; Y10; Y10S; Y10S266/00; Y10S266/90; Y10S266/901
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) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |