US1553922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for facilitating fuel passage through furnaces
Assignee: Westinghouse Electric Corp
•
Filing: 1922-02-07
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Granted: 1925-09-15
•
Expires: 1942-02-07
Abstract
No abstract record available.
Inventors
- 👤 Aram Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:32
CPC Classifications
F; F23; F23H; F23H13/00; F23H2700/00; F23H2700/001; Y; Y10; Y10S; Y10S118/00; Y10S118/13; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12757
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) | 1928-09-14 | 1929-03-16 | 1929-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-09-14 | 1933-03-16 | 1933-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-09-14 | 1937-03-16 | 1937-09-15 | $7700.00 | Window Closed / Lapsed |