Patent US2500347A successfully refreshed from Google Patents.
Patent US2494071A successfully refreshed from Google Patents.
US2494071A
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US
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Die-casting apparatus
Assignee: AT&T Inc
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Filing: 1943-11-11
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Granted: 1950-01-10
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Expires: 1963-11-11
Abstract
No abstract record available.
Inventors
- 👤 Charles C Veale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:30
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/20; B22D17/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2118021A
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US1961942A
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US2293087A
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US2214308A
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US2182059A
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US2210665A
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US2306323A
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US2334372A
Cited
US2363759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |