US2124981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerating method and apparatus
Assignee: Individual
•
Filing: 1936-06-15
•
Granted: 1938-07-26
•
Expires: 1956-06-15
Abstract
No abstract record available.
Inventors
- 👤 Hermann J Krackowizer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:08
CPC Classifications
F; F25; F25D; F25D17/00; F25D17/04; F25D17/06; F25D17/067; F25B; F25B2600/00; F25B2600/02; F25B2600/11; F25B2600/112; F25B49/00; F25B49/02; F25B49/025; F25D21/00; F25D21/04; Y; Y02; Y02B; Y02B30/00; Y02B30/70
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) | 1941-07-25 | 1942-01-24 | 1942-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-07-25 | 1946-01-24 | 1946-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-07-25 | 1950-01-24 | 1950-07-26 | $7700.00 | Window Closed / Lapsed |