US2784522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatably mounted book holder
Assignee: Art Steel Co Inc
•
Filing: 1955-01-07
•
Granted: 1957-03-12
•
Expires: 1975-01-07
Abstract
No abstract record available.
Inventors
- 👤 Bergman Ed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:27
CPC Classifications
B; B42; B42F; B42F11/00; B42F11/02; B42D; B42D17/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US625048A
Cited
US2528318A
Cited
US789065A
Cited
US916963A
Cited
US970399A
Cited
US1132231A
Cited
US1715233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |