Patent US2970503A successfully refreshed from Google Patents.
US2970503A
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US
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Punch tool drive means yieldable upon undue thickness of material being punched
Assignee: Ebauches SA
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Filing: 1957-02-26
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Granted: 1961-02-07
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Expires: 1977-02-26
Abstract
No abstract record available.
Inventors
- 👤 Chevallier Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:43
CPC Classifications
B; B21; B21D; B21D55/00; Y; Y10; Y10T; Y10T83/00; Y10T83/081; Y10T83/086; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2122; Y10T83/2133; Y10T83/869; Y10T83/8759
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1308775A
Cited
US928256A
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US1138374A
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US2589849A
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US2485009A
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US2690918A
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US2856999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |