US2050400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for recovery of heat and chemicals from waste products
Assignee: Babcock and Wilcox Co
•
Filing: 1930-02-03
•
Granted: 1936-08-11
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Expires: 1950-02-03
Abstract
No abstract record available.
Inventors
- 👤 Wagner Charles Linden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:21
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/04; C; C02; C02F; C02F11/00; C02F11/06; C12; C12F; C12F3/00; Y; Y02; Y02W; Y02W10/00; Y02W10/40; Y10; Y10S; Y10S423/00; Y10S423/03
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) | 1939-08-11 | 1940-02-10 | 1940-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-08-11 | 1944-02-10 | 1944-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-08-11 | 1948-02-10 | 1948-08-11 | $7700.00 | Window Closed / Lapsed |