Patent US2552850A successfully refreshed from Google Patents.
US2552850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dump truck for concrete and the like
Assignee: Individual
•
Filing: 1947-08-06
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Granted: 1951-05-15
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Expires: 1967-08-06
Abstract
No abstract record available.
Inventors
- 👤 Gray Mary Edna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:23
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US484754A
Cited
US612445A
Cited
US1086632A
Cited
US1328137A
Cited
US1376146A
Cited
US1805489A
Cited
US1821056A
Cited
US2439961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |