US2579325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot gas agitator for heaters
Assignee: ANTHRACITE EQUIPMENT Corp
•
Filing: 1947-06-25
•
Granted: 1951-12-18
•
Expires: 1967-06-25
Abstract
No abstract record available.
Inventors
- 👤 Krauss Ralph Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:00
CPC Classifications
F; F23; F23L; F23L17/00; F23L2700/00; F23L2700/001
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE244374C
Cited
US75429A
Cited
US373030A
Cited
US2224544A
Cited
US742339A
Cited
US1123526A
Cited
GB222656A
Cited
US1623746A
Cited
US1611913A
Cited
US1938241A
Cited
US2197495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |