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US1697470A
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Method of casting gears or the like of manganese steel with soft-iron centers
Assignee: Electric Steel Foundry Co
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Filing: 1926-10-07
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Granted: 1929-01-01
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Expires: 1946-10-07
Abstract
No abstract record available.
Inventors
- 👤 Walter H Nourse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:13
CPC Classifications
B; B22; B22D; B22D19/00; B22D19/0036; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49668; Y10T29/49677; Y10T29/49705; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19921; Y10T74/19926
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) | 1932-01-01 | 1932-07-02 | 1933-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-01-01 | 1936-07-02 | 1937-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-01-01 | 1940-07-02 | 1941-01-01 | $7700.00 | Window Closed / Lapsed |