US2457147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beam
Assignee: Great Lakes Steel Corp
•
Filing: 1943-12-29
•
Granted: 1948-12-28
•
Expires: 1963-12-29
Abstract
No abstract record available.
Inventors
- 👤 William J Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:41
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/06; E04C3/07; E04C2003/0404; E04C2003/0408; E04C2003/0421; E04C2003/0426; E04C2003/0434; E04C2003/0443; E04C2003/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR743672A
Cited
US2225574A
Cited
US1253216A
Cited
US1906096A
Cited
US1964403A
Cited
US2063714A
Cited
US2112480A
Cited
US2126962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-28 | 1952-06-28 | 1952-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-28 | 1956-06-28 | 1956-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-28 | 1960-06-28 | 1960-12-28 | $7700.00 | Window Closed / Lapsed |