Patent US1587900A successfully refreshed from Google Patents.
US1587900A
Expired / Lapsed
US
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Process of making metal castings
Assignee: Individual
•
Filing: 1924-08-01
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Granted: 1926-06-08
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Expires: 1944-08-01
Abstract
No abstract record available.
Inventors
- 👤 Executor Elmer L Briggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:43
CPC Classifications
B; B22; B22C; B22C21/00; B22C21/12; B22C21/14
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) | 1929-06-07 | 1929-12-07 | 1930-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-06-07 | 1933-12-07 | 1934-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-06-07 | 1937-12-07 | 1938-06-08 | $7700.00 | Window Closed / Lapsed |