US2659646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selectively operated rotary drum file
Assignee: Acme Visible Records Inc
•
Filing: 1950-09-29
•
Granted: 1953-11-17
•
Expires: 1970-09-29
Abstract
No abstract record available.
Inventors
- 👤 Charles E Attwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:39
CPC Classifications
A; A47; A47B; A47B63/00; A47B63/06; A47B63/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1195291A
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US959943A
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US1651852A
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US1798592A
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US2418357A
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US2504629A
Cited
US2480445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |