US2533549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power-driven wheelbarrow
Assignee: Bell Aircraft Corp
•
Filing: 1947-01-09
•
Granted: 1950-12-12
•
Expires: 1967-01-09
Abstract
No abstract record available.
Inventors
- 👤 Lawrence D Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:35
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/18; B62B1/24; B62B5/00; B62B5/0026
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1428194A
Cited
US908633A
Cited
US1292022A
Cited
US1497348A
Cited
GB470589A
Cited
GB544065A
Cited
US2329372A
Cited
US2253288A
Cited
US2374533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |