Patent US2557554A successfully refreshed from Google Patents.
US2557554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double lever press
Assignee: Keppel LeTourneau USA Inc
•
Filing: 1945-10-02
•
Granted: 1951-06-19
•
Expires: 1965-10-02
Abstract
No abstract record available.
Inventors
- 👤 John C Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:37
CPC Classifications
B; B30; B30B; B30B1/00; B30B1/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US47387A
Cited
US124047A
Cited
US413082A
Cited
US494566A
Cited
US1521786A
Cited
US1890369A
Cited
US2017363A
Cited
US2037834A
Cited
US2356790A
Cited
US2370739A
Cited
US2439135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |