US2604933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient support for seat cushions
Assignee: Wingfoot Corp
•
Filing: 1947-03-25
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Granted: 1952-07-29
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Expires: 1967-03-25
Abstract
No abstract record available.
Inventors
- 👤 Charles A Karg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:36
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/282
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) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |