Patent US2537652A successfully refreshed from Google Patents.
US2537652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mattress cover
Assignee: Individual
•
Filing: 1948-11-19
•
Granted: 1951-01-09
•
Expires: 1968-11-19
Abstract
No abstract record available.
Inventors
- 👤 Emma D Churchill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:09
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/002; A47C27/005; A47C31/00; A47C31/10; A47C31/105
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1621149A
Cited
US2440891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |