US2531381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Business machine support for desk drawers
Assignee: All Steel Equipment Inc
•
Filing: 1946-09-18
•
Granted: 1950-11-28
•
Expires: 1966-09-18
Abstract
No abstract record available.
Inventors
- 👤 Charles M Abrahamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:45
CPC Classifications
A; A47; A47B; A47B17/00; A47B17/03; A47B17/036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1204568A
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US1887102A
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US2017223A
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US2123687A
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US2401181A
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US2324247A
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US2370372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |