Patent US2246549A successfully refreshed from Google Patents.
US2246549A
Expired / Lapsed
US
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Combination coolant and lubricant for cold rolling mills
Assignee: Individual
•
Filing: 1940-06-11
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Granted: 1941-06-24
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Expires: 1960-06-11
Abstract
No abstract record available.
Inventors
- 👤 Earl D Spangler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:22
CPC Classifications
C; C10; C10M; C10M173/00; C10M129/00; C10M129/02; C10M129/26; C10M129/28; C10M129/30; C10M129/36; C10M159/00; C10M159/02; C10M159/08; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/124; C10M2207/40; C10M2207/402; C10M2207/404; C10N; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 0
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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) | 1944-06-23 | 1944-12-23 | 1945-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-06-23 | 1948-12-23 | 1949-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-06-23 | 1952-12-23 | 1953-06-24 | $7700.00 | Window Closed / Lapsed |