US2237475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seat cushion
Assignee: Sumitomo Rubber USA LLC
•
Filing: 1939-10-18
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Granted: 1941-04-08
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Expires: 1959-10-18
Abstract
No abstract record available.
Inventors
- 👤 Franklin O Church
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:22
CPC Classifications
B; B62; B62J; B62J1/00; B62J1/002; B60; B60N; B60N2/00; B60N2/24; B60N2/38; B60N2/58; B60N2/5816; B60N2/5883; B62J1/18; B62J1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-04-07 | 1944-10-07 | 1945-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-07 | 1948-10-07 | 1949-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-07 | 1952-10-07 | 1953-04-08 | $7700.00 | Window Closed / Lapsed |