US2047293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making lister shares
Assignee: ILLINOIS IRON AND BOLT Co
•
Filing: 1935-05-11
•
Granted: 1936-07-14
•
Expires: 1955-05-11
Abstract
No abstract record available.
Inventors
- 👤 Charles H Schumacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:55
CPC Classifications
B; B21; B21K; B21K19/00; B21K19/02; B21D; B21D53/00; Y; Y10; Y10T; Y10T29/00; Y10T29/27; Y10T29/49; Y10T29/49448
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) | 1939-07-14 | 1940-01-13 | 1940-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-07-14 | 1944-01-13 | 1944-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-07-14 | 1948-01-13 | 1948-07-14 | $7700.00 | Window Closed / Lapsed |