Patent US2496131A successfully refreshed from Google Patents.
US2496131A
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Method and apparatus for forming and trimming die castings
Assignee: Crown Fastener Corp
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Filing: 1946-04-24
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Granted: 1950-01-31
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Expires: 1966-04-24
Abstract
No abstract record available.
Inventors
- 👤 Louis H Morin
- 👤 Gries Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:20
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/38; B29C45/382; B22; B22D; B22D17/00; B22D17/20; B22D17/2076; B29C37/00; B29C37/02; B29C43/00; Y; Y10; Y10S; Y10S425/00; Y10S425/034; Y10S425/806
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2262193A
Cited
US2367303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-30 | 1953-08-01 | 1954-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-30 | 1957-08-01 | 1958-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-30 | 1961-08-01 | 1962-01-31 | $7700.00 | Window Closed / Lapsed |