US2462984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-conditioned mattress
Assignee: Individual
•
Filing: 1944-10-27
•
Granted: 1949-03-01
•
Expires: 1964-10-27
Abstract
No abstract record available.
Inventors
- 👤 Horace P Maddison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:20
CPC Classifications
A; A47; A47C; A47C21/00; A47C21/04; A47C21/048; A47C21/042; A47C21/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE75885C
Cited
US560613A
Cited
US597058A
Cited
FR429326A
Cited
US1489308A
Cited
GB249760A
Cited
US1936960A
Cited
US2059226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |