Patent US5229968A successfully refreshed from Google Patents.
US2669760A
Expired / Lapsed
US
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Die or press casting machine
Assignee: Hahn and Kolb GmbH and Co
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Filing: 1951-04-25
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Granted: 1954-02-23
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Expires: 1971-04-25
Abstract
No abstract record available.
Inventors
- 👤 Venus Wilibald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:29
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/08; B22D17/12; B22D17/20; B22D17/22; B22D17/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1717254A
Cited
DE539817C
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US1983303A
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US1958199A
Cited
US2018566A
Cited
US2137764A
Cited
US2519739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |