Patent US2605769A successfully refreshed from Google Patents.
US2605769A
Expired / Lapsed
US
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Appliance for the upright filing of index cards
Assignee: Individual
•
Filing: 1947-08-04
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Granted: 1952-08-05
•
Expires: 1967-08-04
Abstract
No abstract record available.
Inventors
- 👤 Lampel Bela
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:22
CPC Classifications
B; B42; B42F; B42F21/00; B42F21/06; B42F21/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1217243A
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US1419394A
Cited
US1684807A
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US1598257A
Cited
US1745651A
Cited
US1800404A
Cited
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Cited
US1975662A
Cited
FR785787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |