Patent US3373643A successfully refreshed from Google Patents.
US3373643A
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US
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Apparatus for punching out workpieces
Assignee: United Shoe Machinery Corp
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Filing: 1966-02-11
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Granted: 1968-03-19
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Expires: 1986-02-11
Abstract
No abstract record available.
Inventors
- 👤 Spengler Ernst Maximilian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:45
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/38; B26F1/44; B21; B21D; B21D37/00; B21D37/20; B21D37/205; C; C14; C14B; C14B5/00; C14B2700/00; C14B2700/11; C14B2700/113; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8821; Y10T83/8828; Y10T83/8831; Y10T83/929; Y10T83/9295; Y10T83/9297; Y10T83/9457; Y10T83/9473
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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |