US2743027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load elevating and transporting attachment for tractors
Assignee: Individual
•
Filing: 1951-03-12
•
Granted: 1956-04-24
•
Expires: 1971-03-12
Abstract
No abstract record available.
Inventors
- 👤 Robertson Jackson Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:23
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1677618A
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US2337801A
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US2398365A
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US2397046A
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US2446584A
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US2505639A
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US2531768A
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US2554900A
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US2524048A
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US2566547A
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US2510179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |