FR859775A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvement in the refining of hydrocarbon oils from petroleum or from the carbonization of hydrocarbon and carbonaceous materials
Assignee: Roger Francois
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Filing: 1939-05-30
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Granted: 1940-12-28
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Expires: 1959-05-30
Abstract
No abstract record available.
Inventors
- 👤 Roger Francois
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-06 13:47
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/06; C10G19/00
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References Cited (Backward Citations)
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