US2166199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace construction and operation
Assignee: Babcock and Wilcox Co
•
Filing: 1936-12-05
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Granted: 1939-07-18
•
Expires: 1956-12-05
Abstract
No abstract record available.
Inventors
- 👤 Guy T Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:25
CPC Classifications
F; F23; F23C; F23C99/00; F23C2700/00; F23C2700/06; F23C2700/063
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) | 1942-07-17 | 1943-01-16 | 1943-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-07-17 | 1947-01-16 | 1947-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-07-17 | 1951-01-16 | 1951-07-18 | $7700.00 | Window Closed / Lapsed |