US1827446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making refractory linings
Assignee: Individual
•
Filing: 1928-08-14
•
Granted: 1931-10-13
•
Expires: 1948-08-14
Abstract
No abstract record available.
Inventors
- 👤 Westberg Sigurd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:01
CPC Classifications
F; F27; F27B; F27B14/00; F27B14/08; F27B14/10; F27B14/06; F27B14/061; F27D; F27D1/00; F27D1/16; F27B2014/104; F27D1/0003; F27D1/0006; F27D99/00; F27D99/0001; F27D99/0006; F27D2099/0015; F27D2099/002; F27M; F27M2003/00; F27M2003/08
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) | 1934-10-12 | 1935-04-13 | 1935-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-10-12 | 1939-04-13 | 1939-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-10-12 | 1943-04-13 | 1943-10-13 | $7700.00 | Window Closed / Lapsed |