Patent US1851518A successfully refreshed from Google Patents.
US1851845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural steel working machine
Assignee: ACF Industries Inc
•
Filing: 1929-02-20
•
Granted: 1932-03-29
•
Expires: 1949-02-20
Abstract
No abstract record available.
Inventors
- 👤 Kaseberg Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:10
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/243; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4534; Y10T83/4536; Y10T83/4539; Y10T83/4541; Y10T83/4556; Y10T83/461; Y10T83/586; Y10T83/626
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1935-03-29 | 1935-09-28 | 1936-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-03-29 | 1939-09-28 | 1940-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-03-29 | 1943-09-28 | 1944-03-29 | $7700.00 | Window Closed / Lapsed |