US2706569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment for controlling relative raising and lowering of hand trucks
Assignee: Individual
•
Filing: 1953-05-21
•
Granted: 1955-04-19
•
Expires: 1973-05-21
Abstract
No abstract record available.
Inventors
- 👤 Frazier S Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:13
CPC Classifications
B; B62; B62B; B62B5/00; B62B5/0003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US141653A
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US619774A
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US1201790A
Cited
DE474970C
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US1885399A
Cited
US2516881A
Cited
US2557203A
Cited
US2598489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-18 | 1958-10-18 | 1959-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-18 | 1962-10-18 | 1963-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-18 | 1966-10-18 | 1967-04-19 | $7700.00 | Window Closed / Lapsed |