US2480346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for defrosting cooling coils
Assignee: Frick Co Inc
•
Filing: 1948-09-23
•
Granted: 1949-08-30
•
Expires: 1968-09-23
Abstract
No abstract record available.
Inventors
- 👤 Mahlon B Watts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:25
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/06; F25D21/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2001027A
Cited
US2025456A
Cited
US2001028A
Cited
US2219393A
Cited
US2300085A
Cited
US2323511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |