Patent US2304774A successfully refreshed from Google Patents.
US2304774A
Expired / Lapsed
US
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Dual wheel assembly
Assignee: Individual
•
Filing: 1941-02-11
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Granted: 1942-12-15
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Expires: 1961-02-11
Abstract
No abstract record available.
Inventors
- 👤 Charles S Ash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:43
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/02; F16D55/22; F16D55/025; F16D55/24; F16D55/26; F16D55/36; F16D55/40; F16D65/00; F16D65/02; F16D65/12; F16D65/128; F16D2055/0004; F16D2055/005; F16D2055/0058
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) | 1945-12-14 | 1946-06-15 | 1946-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-12-14 | 1950-06-15 | 1950-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-12-14 | 1954-06-15 | 1954-12-15 | $7700.00 | Window Closed / Lapsed |