US1779534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of casting and rolling copper
Assignee: American Metal Co Ltd
•
Filing: 1928-02-13
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Granted: 1930-10-28
•
Expires: 1948-02-13
Abstract
No abstract record available.
Inventors
- 👤 William F Eppensteiner
- 👤 Henry M Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:12
CPC Classifications
B; B22; B22D; B22D7/00; B22D7/005; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49972; Y10T29/49975; Y10T29/49979; Y10T29/4998; Y10T29/49988; Y10T29/49989
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) | 1933-10-27 | 1934-04-28 | 1934-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-10-27 | 1938-04-28 | 1938-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-10-27 | 1942-04-28 | 1942-10-28 | $7700.00 | Window Closed / Lapsed |