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US2547168A
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Laminated die
Assignee: FORT WAYNE TOOL DIE AND ENGINE
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Filing: 1945-10-18
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Granted: 1951-04-03
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Expires: 1965-10-18
Abstract
No abstract record available.
Inventors
- 👤 Richard G Nill
- 👤 Frederick J Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:17
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/14; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/217; Y10T83/2172
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR555861A
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US1571559A
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US1915080A
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US2108253A
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US2163229A
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US2196902A
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US2325617A
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US2186799A
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US2379003A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |