US2853725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for forming hinge joints in cased books
Assignee: RR Donnelley and Sons Co
•
Filing: 1956-06-19
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Granted: 1958-09-30
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Expires: 1976-06-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert L Schoenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:16
CPC Classifications
B; B42; B42C; B42C13/00; B42C13/003; Y; Y10; Y10S; Y10S156/00; Y10S156/908
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) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |