US2616720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheeled attachment for hand trucks
Assignee: Individual
•
Filing: 1949-12-19
•
Granted: 1952-11-04
•
Expires: 1969-12-19
Abstract
No abstract record available.
Inventors
- 👤 Robert J Knoth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:29
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/10; B62B1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US672152A
Cited
US878546A
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US1100702A
Cited
GB102314A
Cited
GB185067A
Cited
GB418288A
Cited
US2243915A
Cited
GB545825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |