US2560252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet piler
Assignee: United States Steel Corp
•
Filing: 1947-06-04
•
Granted: 1951-07-10
•
Expires: 1967-06-04
Abstract
No abstract record available.
Inventors
- 👤 Frederick K Schefe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:26
CPC Classifications
B; B65; B65H; B65H29/00; B65H29/38; B65H29/40; B65H2301/00; B65H2301/40; B65H2301/42; B65H2301/421; B65H2301/4212; B65H2404/00; B65H2404/60; B65H2404/65; B65H2404/659; B65H2404/6591
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1358152A
Cited
US1727209A
Cited
US1688219A
Cited
US1750396A
Cited
US2165918A
Cited
US2300863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |