Patent US2791772A successfully refreshed from Google Patents.
Patent US2794565A successfully refreshed from Google Patents.
US2794565A
Expired / Lapsed
US
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Trailer for heavy machinery
Assignee: Individual
•
Filing: 1955-04-14
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Granted: 1957-06-04
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Expires: 1975-04-14
Abstract
No abstract record available.
Inventors
- 👤 Lawrence S Ratliff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:30
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/07; B62; B62D; B62D53/00; B62D53/04; B62D53/06; B62D53/061; B62D53/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1657655A
Cited
US2029489A
Cited
US2312769A
Cited
US2350841A
Cited
DE872432C
Cited
US2531694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |