US2025341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating plant
Assignee: J WILLIAM MENGEL
•
Filing: 1933-06-09
•
Granted: 1935-12-24
•
Expires: 1953-06-09
Abstract
No abstract record available.
Inventors
- 👤 Curioni Aldo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:53
CPC Classifications
F; F02; F02G; F02G5/00; F24; F24D; F24D12/00; F24D12/02; F24D2200/00; F24D2200/16; F24D2200/18; F24D2200/26; Y; Y02; Y02B; Y02B30/00; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
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) | 1938-12-23 | 1939-06-24 | 1939-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-12-23 | 1943-06-24 | 1943-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-12-23 | 1947-06-24 | 1947-12-24 | $7700.00 | Window Closed / Lapsed |