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US2456787A
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Process and apparatus for heating hydrocarbon fluids
Assignee: Lummus Technology LLC
•
Filing: 1946-03-09
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Granted: 1948-12-21
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Expires: 1966-03-09
Abstract
No abstract record available.
Inventors
- 👤 Kniel Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:58
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/14; C10G9/18; C10G9/20; F; F16; F16L; F16L3/00; F16L3/16; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/20; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/95
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1528327A
Cited
US2023063A
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US1980330A
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US2029293A
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US2190635A
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US2075863A
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US2108397A
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US2105500A
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US2147662A
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US2211708A
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US2263557A
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US2221469A
Cited
US2324553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |