Patent US2531841A successfully refreshed from Google Patents.
US2531841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk blade for trimming book blocks
Assignee: DE FLOREZ ENGINEERING COMPANY Inc
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Filing: 1948-06-16
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Granted: 1950-11-28
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Expires: 1968-06-16
Abstract
No abstract record available.
Inventors
- 👤 Frank J Cashin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:36
CPC Classifications
B; B26; B26D; B26D1/00; B26D1/01; B26D1/12; B26D1/14; B26D1/143; B26D1/147; B26D7/00; B26D7/08; B26D7/12; Y; Y10; Y10T; Y10T83/00; Y10T83/929; Y10T83/9319; Y10T83/9372; Y10T83/9403
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) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |