US2260593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making wear resistant surfaces
Assignee: TEXAS ELECTRIC STEEL CASTING C
•
Filing: 1940-05-27
•
Granted: 1941-10-28
•
Expires: 1960-05-27
Abstract
No abstract record available.
Inventors
- 👤 Frederick M Wittlinger
- 👤 Jr Charles W Shartle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:32
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/04; B24D3/06; B24D3/08; B22; B22D; B22D19/00; B22D19/06; Y; Y10; Y10S; Y10S76/00; Y10S76/11; Y10S76/12
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) | 1944-10-27 | 1945-04-28 | 1945-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-10-27 | 1949-04-28 | 1949-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-10-27 | 1953-04-28 | 1953-10-28 | $7700.00 | Window Closed / Lapsed |