US2302320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerating apparatus
Assignee: Individual
•
Filing: 1939-08-12
•
Granted: 1942-11-17
•
Expires: 1959-08-12
Abstract
No abstract record available.
Inventors
- 👤 Hintze Rudolf
- 👤 Lehfeldt Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:24
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/02; F25B49/025; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/1912; G05D23/20; G05D23/24; F25B2700/00; F25B2700/21; F25B2700/2117
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) | 1945-11-16 | 1946-05-18 | 1946-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-11-16 | 1950-05-18 | 1950-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-11-16 | 1954-05-18 | 1954-11-17 | $7700.00 | Window Closed / Lapsed |