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Patent US1657474A successfully refreshed from Google Patents.
US1657474A
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US
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Loose-leaf binder and method of making the same
Assignee: IRVING PITT Manufacturing Co
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Filing: 1925-12-16
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Granted: 1928-01-31
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Expires: 1945-12-16
Abstract
No abstract record available.
Inventors
- 👤 Thomas P Hyland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:46
CPC Classifications
B; B42; B42F; B42F13/00; B42F13/0006; B42F13/0066; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49906; Y10T83/00; Y10T83/04; Y10T83/0524
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1931-01-30 | 1931-08-01 | 1932-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-01-30 | 1935-08-01 | 1936-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-01-30 | 1939-08-01 | 1940-01-31 | $7700.00 | Window Closed / Lapsed |