US2492397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defroster for evaporators
Assignee: BUSH Manufacturing Co
•
Filing: 1946-01-26
•
Granted: 1949-12-27
•
Expires: 1966-01-26
Abstract
No abstract record available.
Inventors
- 👤 Hans P Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:19
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/06; F25D21/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE18263E
Cited
US1936391A
Cited
US1890085A
Cited
US2081479A
Cited
US2095835A
Cited
US2251697A
Cited
US2276454A
Cited
US2196291A
Cited
US2185692A
Cited
US2262336A
Cited
US2400168A
Cited
US2410194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |