US2583097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Student's bookholder
Assignee: Individual
•
Filing: 1948-10-29
•
Granted: 1952-01-22
•
Expires: 1968-10-29
Abstract
No abstract record available.
Inventors
- 👤 Henry C Heimann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:09
CPC Classifications
A; A47; A47B; A47B19/00; A47B19/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US770842A
Cited
US1035430A
Cited
US1219393A
Cited
GB191512167A
Cited
US1554211A
Cited
US2062553A
Cited
US2041017A
Cited
US2373617A
Cited
US2374409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |