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US2521935A
Expired / Lapsed
US
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Stapling machine
Assignee: Ex-Cell-O Corp
•
Filing: 1946-12-17
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Granted: 1950-09-12
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Expires: 1966-12-17
Abstract
No abstract record available.
Inventors
- 👤 Charles Z Monroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:09
CPC Classifications
B; B27; B27F; B27F7/00; B27F7/17; B27F7/19; B27F7/21; B27F7/23; B27F7/006; B65; B65B; B65B51/00; B65B51/04; B65B51/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US746549A
Cited
US779680A
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US933890A
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US1254779A
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US1093390A
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US1562997A
Cited
US1669383A
Cited
US2063345A
Cited
US2364504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |