Patent US2749967A successfully refreshed from Google Patents.
US2749967A
Expired / Lapsed
US
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Bookcase making machine
Assignee: Dexter Folder Co
•
Filing: 1952-12-06
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Granted: 1956-06-12
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Expires: 1972-12-06
Abstract
No abstract record available.
Inventors
- 👤 Dorothy E H Bach
- 👤 Edwin W Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:18
CPC Classifications
B; B42; B42C; B42C7/00; B42C7/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US330303A
Cited
US490895A
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US549499A
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US580111A
Cited
US592429A
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US1977908A
Cited
GB598899A
Cited
US2596068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |