Patent US2618504A successfully refreshed from Google Patents.
Patent US2166795A successfully refreshed from Google Patents.
US2166795A
Expired / Lapsed
US
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Sintered hard alloy for machining hard castings
Assignee: General Electric Co
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Filing: 1939-03-28
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Granted: 1939-07-18
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Expires: 1959-03-28
Abstract
No abstract record available.
Inventors
- 👤 Chelius Reinhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:55
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/02; C22C29/06; C22C29/08
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) | 1942-07-17 | 1943-01-16 | 1943-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-07-17 | 1947-01-16 | 1947-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-07-17 | 1951-01-16 | 1951-07-18 | $7700.00 | Window Closed / Lapsed |