US2255647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible seat
Assignee: Individual
•
Filing: 1940-05-21
•
Granted: 1941-09-09
•
Expires: 1960-05-21
Abstract
No abstract record available.
Inventors
- 👤 William R Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:17
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/24; B60N2/30; B60N2/3038; B60N2/304; B60N2/3045; B60N2/305; B60N2/3002; B60N2/3004; B60N2/3009; B60N2/3013; B60N2/32; B60N2/36
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) | 1944-09-08 | 1945-03-10 | 1945-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-09-08 | 1949-03-10 | 1949-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-09-08 | 1953-03-10 | 1953-09-09 | $7700.00 | Window Closed / Lapsed |