Patent US2537565A successfully refreshed from Google Patents.
US2537565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Book unit rack
Assignee: Unisys Corp
•
Filing: 1948-10-29
•
Granted: 1951-01-09
•
Expires: 1968-10-29
Abstract
No abstract record available.
Inventors
- 👤 Carl F Wolters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:10
CPC Classifications
A; A47; A47B; A47B65/00; A47B63/00; B; B42; B42F; B42F7/00; B42F7/06; A47B47/00; A47B47/0091; B42P; B42P2241/00; B42P2241/12; B42P2241/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1298628A
Cited
US1449194A
Cited
US1449195A
Cited
US1736574A
Cited
US2158972A
Cited
US2380678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |