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US2477786A
Expired / Lapsed
US
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Card filing equipment
Assignee: E M THORSEN
•
Filing: 1946-04-25
•
Granted: 1949-08-02
•
Expires: 1966-04-25
Abstract
No abstract record available.
Inventors
- 👤 Sophie E Bruen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:04
CPC Classifications
A; A47; A47B; A47B63/00; A47B63/06; A47B63/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1475555A
Cited
US2343280A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |