US2825998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible bookrest
Assignee: Individual
•
Filing: 1957-04-02
•
Granted: 1958-03-11
•
Expires: 1977-04-02
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Ey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:27
CPC Classifications
A; A47; A47B; A47B23/00; A47B23/04; A47B23/042; A47B23/043; A47B2023/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US680080A
Cited
US743678A
Cited
US1200744A
Cited
US1570973A
Cited
US1564708A
Cited
US1631355A
Cited
US2090346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |