Patent US2239463A successfully refreshed from Google Patents.
US2239463A
Expired / Lapsed
US
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Wheel
Assignee: Wingfoot Corp
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Filing: 1936-07-30
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Granted: 1941-04-22
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Expires: 1956-07-30
Abstract
No abstract record available.
Inventors
- 👤 Burton L Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:57
CPC Classifications
B; B60; B60B; B60B3/00; B60B3/002; B60B3/007; B60B3/14; B60B3/16; B60B35/00; B60B35/02; B60B35/10; B60B35/1009; B60B35/1027; B60B35/1072; B60B35/1081; B60B2310/00; B60B2310/20; B60B2310/228; B60B2360/00; B60B2360/14; B60B2360/147; B60Y; B60Y2200/00; B60Y2200/20; B60Y2200/22; B60Y2200/221
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) | 1944-04-21 | 1944-10-21 | 1945-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-21 | 1948-10-21 | 1949-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-21 | 1952-10-21 | 1953-04-22 | $7700.00 | Window Closed / Lapsed |