US2538880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cushion
Assignee: Individual
•
Filing: 1946-01-05
•
Granted: 1951-01-23
•
Expires: 1966-01-05
Abstract
No abstract record available.
Inventors
- 👤 Paul R Robell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:54
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1682394A
Cited
US1852943A
Cited
US2048126A
Cited
US2150287A
Cited
US2194569A
Cited
FR841400A
Cited
US2359003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-22 | 1954-07-24 | 1955-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-22 | 1958-07-24 | 1959-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-22 | 1962-07-24 | 1963-01-23 | $7700.00 | Window Closed / Lapsed |