US2470184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for cooling combustion chambers
Assignee: BBC Brown Boveri AG Germany
•
Filing: 1942-12-16
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Granted: 1949-05-17
•
Expires: 1962-12-16
Abstract
No abstract record available.
Inventors
- 👤 Pfenninger Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:00
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US611813A
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US1375601A
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US2011420A
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US2131781A
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US2107365A
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US2110209A
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GB484289A
Cited
GB539069A
Cited
US2268464A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |