Patent US2421731A successfully refreshed from Google Patents.
US2421731A
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Machine for cutting shoe sole taps
Assignee: WILLIAMS CUT SOLE CO
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Filing: 1944-12-08
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Granted: 1947-06-03
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Expires: 1964-12-08
Abstract
No abstract record available.
Inventors
- 👤 Williams Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:15
CPC Classifications
C; C14; C14B; C14B5/00; C14B2700/00; C14B2700/11; Y; Y10; Y10T; Y10T83/00; Y10T83/748; Y10T83/7593; Y10T83/7647; Y10T83/7653; Y10T83/766; Y10T83/808; Y10T83/825; Y10T83/869; Y10T83/8798; Y10T83/8804; Y10T83/929; Y10T83/9411; Y10T83/9449
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) | 1950-06-02 | 1950-12-02 | 1951-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-02 | 1954-12-02 | 1955-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-02 | 1958-12-02 | 1959-06-03 | $7700.00 | Window Closed / Lapsed |