US1820074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for cooling mill rolls
Assignee: Seiberling Rubber Co
•
Filing: 1928-12-03
•
Granted: 1931-08-25
•
Expires: 1948-12-03
Abstract
No abstract record available.
Inventors
- 👤 Karl B Kilborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:12
CPC Classifications
F; F28; F28F; F28F5/00; F28F5/02; B; B29; B29B; B29B7/00; B29B7/30; B29B7/58; B29B7/62; B29B7/625; B29B7/80; B29B7/82
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) | 1934-08-24 | 1935-02-23 | 1935-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-08-24 | 1939-02-23 | 1939-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-08-24 | 1943-02-23 | 1943-08-25 | $7700.00 | Window Closed / Lapsed |