US2767738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve assembly for metallurgical furnaces or the like
Assignee: Blaw Knox Co
•
Filing: 1950-12-27
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Granted: 1956-10-23
•
Expires: 1970-12-27
Abstract
No abstract record available.
Inventors
- 👤 Pottmeyer Edward William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:23
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F16K11/052; F27; F27B; F27B3/00; F27B3/10; F27B3/22; F27D; F27D7/00; F27D7/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86847
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US98322A
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US260490A
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US1581595A
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US1858246A
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US2035747A
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US2158309A
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US2312290A
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US2292906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |