Patent US2769678A successfully refreshed from Google Patents.
US2769678A
Expired / Lapsed
US
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Insulated ledger desk
Assignee: Unisys Corp
•
Filing: 1953-03-31
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Granted: 1956-11-06
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Expires: 1973-03-31
Abstract
No abstract record available.
Inventors
- 👤 Carl F Wolters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:57
CPC Classifications
A; A47; A47B; A47B51/00; A47B2220/00; A47B2220/0002; A47B2220/0013
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US408385A
Cited
US1943997A
Cited
US1921690A
Cited
US2003302A
Cited
US2201948A
Cited
US2338477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |