US2944836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable trailer hitches
Assignee: Dalton Foundries Inc
•
Filing: 1958-08-07
•
Granted: 1960-07-12
•
Expires: 1978-08-07
Abstract
No abstract record available.
Inventors
- 👤 Clell R Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:49
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/48; B60D1/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |