Patent US2504071A successfully refreshed from Google Patents.
US2504071A
Expired / Lapsed
US
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Machine for scraping and burnishing the edges of books
Assignee: HADDON BINDERY Inc
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Filing: 1948-01-30
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Granted: 1950-04-11
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Expires: 1968-01-30
Abstract
No abstract record available.
Inventors
- 👤 John H Esak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:06
CPC Classifications
B; B42; B42C; B42C7/00; B42C7/009; Y; Y10; Y10T; Y10T29/00; Y10T29/47; Y10T409/00; Y10T409/50; Y10T409/50246; Y10T409/504756; Y10T409/506232; Y10T409/506396; Y10T409/506724; Y10T409/507872; Y10T83/00; Y10T83/869; Y10T83/8821; Y10T83/8822
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) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |