Patent US3446106A successfully refreshed from Google Patents.
US3446106A
Expired / Lapsed
US
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Punch press with sliding bolster plate
Assignee: Union Special Machine Co
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Filing: 1967-02-16
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Granted: 1969-05-27
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Expires: 1987-02-16
Abstract
No abstract record available.
Inventors
- 👤 Charles L Ferris
- 👤 Robert J Babecki
- 👤 Finn N Braathen
- 👤 George J Sirovatka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:13
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/14; Y; Y10; Y10S; Y10S100/00; Y10S100/918; Y10T; Y10T83/00; Y10T83/525; Y10T83/541; Y10T83/626; Y10T83/637; Y10T83/647; Y10T83/654; Y10T83/6563; Y10T83/869; Y10T83/8748
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |