US1896837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming bolts
Assignee: Western Railway Equipment Co
•
Filing: 1931-04-29
•
Granted: 1933-02-07
•
Expires: 1951-04-29
Abstract
No abstract record available.
Inventors
- 👤 Sterling H Campbell
- 👤 Frederick K Habenicht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:12
CPC Classifications
B; B21; B21J; B21J5/00; B21J5/02; B21J5/06; B21J5/08; B21K; B21K1/00; B21K1/44; B21K1/46
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) | 1936-02-07 | 1936-08-08 | 1937-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-02-07 | 1940-08-08 | 1941-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-02-07 | 1944-08-08 | 1945-02-07 | $7700.00 | Window Closed / Lapsed |