US2572731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Book- and copyholder
Assignee: Individual
•
Filing: 1949-03-07
•
Granted: 1951-10-23
•
Expires: 1969-03-07
Abstract
No abstract record available.
Inventors
- 👤 Keith Arthur Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:35
CPC Classifications
A; A47; A47B; A47B19/00; A47B19/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1384861A
Cited
US1483421A
Cited
US1436544A
Cited
US1488282A
Cited
US1864807A
Cited
US2219091A
Cited
US2239791A
Cited
US2374409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |