US2111904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerating system
Assignee: Individual
•
Filing: 1932-11-19
•
Granted: 1938-03-22
•
Expires: 1952-11-19
Abstract
No abstract record available.
Inventors
- 👤 Schlumbohm Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:44
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/02; F25B; F25B23/00; F25B23/006; F25B2500/00; F25B2500/01; F25D2303/00; F25D2303/08; F25D2303/081; F25D2500/00; F25D2500/02
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) | 1941-03-21 | 1941-09-20 | 1942-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-03-21 | 1945-09-20 | 1946-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-03-21 | 1949-09-20 | 1950-03-22 | $7700.00 | Window Closed / Lapsed |