US2924426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical jacking device
Assignee: Individual
•
Filing: 1954-08-30
•
Granted: 1960-02-09
•
Expires: 1974-08-30
Abstract
No abstract record available.
Inventors
- 👤 Henry A Ellery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:36
CPC Classifications
B; B66; B66F; B66F1/00; B66F1/02; B66F1/04; B66F1/06; B60; B60S; B60S9/00; B60S9/02; B60S9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US373528A
Cited
US449308A
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US802588A
Cited
US1342057A
Cited
US1663131A
Cited
US2153722A
Cited
US2196510A
Cited
US2245935A
Cited
US2570334A
Cited
US2715029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-08 | 1963-08-10 | 1964-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-08 | 1967-08-10 | 1968-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-08 | 1971-08-10 | 1972-02-09 | $7700.00 | Window Closed / Lapsed |