US2104589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerating apparatus
Assignee: Individual
•
Filing: 1934-02-23
•
Granted: 1938-01-04
•
Expires: 1954-02-23
Abstract
No abstract record available.
Inventors
- 👤 Frank W Hartman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:54
CPC Classifications
A; A61; A61G; A61G10/00; A61G10/04; A61M; A61M2205/00; A61M2205/36; A61M2205/3606; Y; Y10; Y10S; Y10S55/00; Y10S55/29
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) | 1941-01-03 | 1941-07-05 | 1942-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-01-03 | 1945-07-05 | 1946-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-01-03 | 1949-07-05 | 1950-01-04 | $7700.00 | Window Closed / Lapsed |