Patent US1578648A successfully refreshed from Google Patents.
US1578648A
Expired / Lapsed
US
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Method of melting metals
Assignee: Individual
•
Filing: 1925-05-05
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Granted: 1926-03-30
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Expires: 1945-05-05
Abstract
No abstract record available.
Inventors
- 👤 Dyer Yulee Alison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:01
CPC Classifications
C; C21; C21C; C21C1/00; Y; Y10; Y10S; Y10S266/00; Y10S266/90; Y10S266/901
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) | 1929-03-29 | 1929-09-28 | 1930-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-03-29 | 1933-09-28 | 1934-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-03-29 | 1937-09-28 | 1938-03-30 | $7700.00 | Window Closed / Lapsed |