US2252800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operating device for water-gas plants, blast-furnace stoves, or the like
Assignee: Beazer East Inc
•
Filing: 1938-02-07
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Granted: 1941-08-19
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Expires: 1958-02-07
Abstract
No abstract record available.
Inventors
- 👤 Daniels Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:30
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/02; C10J3/20; C10J3/22; C10J3/24; C21; C21B; C21B9/00; C21B9/10; C21B9/12; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86445; Y10T137/86461; Y10T137/87096
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) | 1944-08-18 | 1945-02-17 | 1945-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-08-18 | 1949-02-17 | 1949-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-08-18 | 1953-02-17 | 1953-08-19 | $7700.00 | Window Closed / Lapsed |