US2579918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cushioning assembly unit for back rests
Assignee: Individual
•
Filing: 1947-01-25
•
Granted: 1951-12-25
•
Expires: 1967-01-25
Abstract
No abstract record available.
Inventors
- 👤 Roland J Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:59
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/44; A47C7/441; A47C7/443; A47C7/448
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE510613C
Cited
US1775433A
Cited
US1929201A
Cited
US2056965A
Cited
US2208561A
Cited
US2430709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |