Patent US2716557A successfully refreshed from Google Patents.
US2716557A
Expired / Lapsed
US
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Extensible and foldable hand truck
Assignee: Individual
•
Filing: 1953-07-13
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Granted: 1955-08-30
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Expires: 1973-07-13
Abstract
No abstract record available.
Inventors
- 👤 Charles L Gould
- 👤 Elwin L Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:54
CPC Classifications
B; B62; B62B; B62B3/00; B62B3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-29 | 1959-02-28 | 1959-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-29 | 1963-02-28 | 1963-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-29 | 1967-02-28 | 1967-08-30 | $7700.00 | Window Closed / Lapsed |