Patent US2795803A successfully refreshed from Google Patents.
US2795803A
Expired / Lapsed
US
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Ventilating openings and closures therefor for mattresses
Assignee: Individual
•
Filing: 1953-07-01
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Granted: 1957-06-18
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Expires: 1973-07-01
Abstract
No abstract record available.
Inventors
- 👤 Frank E Radzik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:26
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/002; A47C27/007; A47C21/00; A47C21/04; A47C21/042; A47C21/046
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) | 1960-06-17 | 1960-12-17 | 1961-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-17 | 1964-12-17 | 1965-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-17 | 1968-12-17 | 1969-06-18 | $7700.00 | Window Closed / Lapsed |