US2639159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer supporting and steering dolly and weight equalizer
Assignee: Individual
•
Filing: 1949-09-27
•
Granted: 1953-05-19
•
Expires: 1969-09-27
Abstract
No abstract record available.
Inventors
- 👤 Charles L Milligan
- 👤 Clarence D Swaim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:02
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/247; B60D1/58; B60D1/66; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/0857; B62D53/0864
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2271304A
Cited
US2344921A
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US2385099A
Cited
US2376001A
Cited
US2411009A
Cited
US2496515A
Cited
US2440502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |