Patent US2894324A successfully refreshed from Google Patents.
US1804392A
Expired / Lapsed
US
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Method of binding books
Assignee: RR Donnelley and Sons Co
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Filing: 1928-11-26
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Granted: 1931-05-12
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Expires: 1948-11-26
Abstract
No abstract record available.
Inventors
- 👤 Harley C Alger
- 👤 Philip A Frazier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:30
CPC Classifications
B; B42; B42C; B42C9/00; B42C9/0006; B42C9/0012; B42C9/0031; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1034
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) | 1934-05-11 | 1934-11-10 | 1935-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-05-11 | 1938-11-10 | 1939-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-05-11 | 1942-11-10 | 1943-05-12 | $7700.00 | Window Closed / Lapsed |