Patent US2439288A successfully refreshed from Google Patents.
US2439288A
Expired / Lapsed
US
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Object lifting and moving jack
Assignee: Individual
•
Filing: 1945-09-18
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Granted: 1948-04-06
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Expires: 1965-09-18
Abstract
No abstract record available.
Inventors
- 👤 Walter E Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:51
CPC Classifications
B; B62; B62B; B62B5/00; B62B5/0083; B62B5/0089; B66; B66F; B66F15/00
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) | 1951-04-06 | 1951-10-06 | 1952-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-06 | 1955-10-06 | 1956-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-06 | 1959-10-06 | 1960-04-06 | $7700.00 | Window Closed / Lapsed |