US2555421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic jack
Assignee: Individual
•
Filing: 1947-09-19
•
Granted: 1951-06-05
•
Expires: 1967-09-19
Abstract
No abstract record available.
Inventors
- 👤 Rudolph W Ronan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:44
CPC Classifications
B; B25; B25F; B25F1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US343780A
Cited
US1721189A
Cited
US2044044A
Cited
US2096574A
Cited
US2072088A
Cited
US2107970A
Cited
US2195045A
Cited
US2257245A
Cited
US2440060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |