US2747883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand truck with multiple wheel pairs
Assignee: Individual
•
Filing: 1953-11-23
•
Granted: 1956-05-29
•
Expires: 1973-11-23
Abstract
No abstract record available.
Inventors
- 👤 Frank S Frost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:10
CPC Classifications
B; B62; B62B; B62B5/00; B62B5/02; B62B5/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US255693A
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US416846A
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US482708A
Cited
US843034A
Cited
US849270A
Cited
US932330A
Cited
GB134173A
Cited
US1641371A
Cited
US2706640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |