US2474301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of firing the chambers of kilns
Assignee: Selas Corp of America
•
Filing: 1946-04-18
•
Granted: 1949-06-28
•
Expires: 1966-04-18
Abstract
No abstract record available.
Inventors
- 👤 Blaha Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:21
CPC Classifications
F; F27; F27D; F27D99/00; F27D99/0001; F27D99/0033; F27D99/0035; F27B; F27B5/00; F27B5/06; F27B5/14; F27D1/00; F27D1/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2145074A
Cited
US1694964A
Cited
US1617056A
Cited
US1893847A
Cited
US2215079A
Cited
US2220928A
Cited
US2268987A
Cited
US2268988A
Cited
US2287246A
Cited
US2339477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-27 | 1952-12-27 | 1953-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-27 | 1956-12-27 | 1957-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-27 | 1960-12-27 | 1961-06-28 | $7700.00 | Window Closed / Lapsed |