US2446636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration
Assignee: Hoover Co
•
Filing: 1943-10-02
•
Granted: 1948-08-10
•
Expires: 1963-10-02
Abstract
No abstract record available.
Inventors
- 👤 Curtis C Coons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:43
CPC Classifications
F; F25; F25B; F25B17/00; F25B17/08; F25B17/083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US462904A
Cited
US1781758A
Cited
US1774820A
Cited
US1908413A
Cited
US1992745A
Cited
US2049413A
Cited
US2319806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |