Patent US2477334A successfully refreshed from Google Patents.
US2477334A
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Seal around a cleaning element entering a combustion chamber
Assignee: VULCAN SOOT BLOWER Corp
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Filing: 1944-05-02
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Granted: 1949-07-26
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Expires: 1964-05-02
Abstract
No abstract record available.
Inventors
- 👤 De Los E Hibner
- 👤 Fred C Arey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:24
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1543356A
Cited
US1715483A
Cited
US1849737A
Cited
US1979686A
Cited
US1846598A
Cited
US2185450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |