Patent US2693389A successfully refreshed from Google Patents.
US2693389A
Expired / Lapsed
US
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Dump cart mechanism
Assignee: Individual
•
Filing: 1949-03-08
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Granted: 1954-11-02
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Expires: 1969-03-08
Abstract
No abstract record available.
Inventors
- 👤 Frank A Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:23
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/18; B62B1/24
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) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |