US2590202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material discharge mechanism
Assignee: Babcock and Wilcox Co
•
Filing: 1945-10-29
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Granted: 1952-03-25
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Expires: 1965-10-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles L Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:58
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/34; B65G53/40; B65G53/46; B65G53/4691; F; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1382371A
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US791352A
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US802176A
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US1080602A
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US1433109A
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US1652250A
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DE466192C
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DE560041C
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US1863871A
Cited
US2227706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |