US2663440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motorized hand truck
Assignee: F T ISAACSON
•
Filing: 1951-10-08
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Granted: 1953-12-22
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Expires: 1971-10-08
Abstract
No abstract record available.
Inventors
- 👤 Jackson Rodney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:52
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/26; B62B1/264; B62B3/00; B62B3/04; B62B3/06; B62B3/0612; B62B2202/00; B62B2202/02; B62B2203/00; B62B2203/10; B62B2203/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1201957A
Cited
US1379472A
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US1827209A
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US2251435A
Cited
US2377389A
Cited
US2485085A
Cited
US2570256A
Cited
US2598515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |