US2431834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding wheelbarrow
Assignee: Individual
•
Filing: 1944-04-24
•
Granted: 1947-12-02
•
Expires: 1964-04-24
Abstract
No abstract record available.
Inventors
- 👤 Robert E Sinclair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:02
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/18; B62B1/20; B62B1/208
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US771134A
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US1642731A
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GB455613A
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US2052803A
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DE702804C
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-01 | 1951-06-02 | 1951-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-01 | 1955-06-02 | 1955-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-01 | 1959-06-02 | 1959-12-02 | $7700.00 | Window Closed / Lapsed |