US2623574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air mattress
Assignee: Individual
•
Filing: 1950-12-27
•
Granted: 1952-12-30
•
Expires: 1970-12-27
Abstract
No abstract record available.
Inventors
- 👤 Damsch Herbert Otto Er Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:19
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/14; A47C1/146; A47C4/00; A47C4/54; Y; Y10; Y10S; Y10S297/00; Y10S297/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |