FR581469A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Process for the purification of crude mineral oils and the like
Assignee: Martha Helbling-Erpf
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Filing: 1924-05-09
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Granted: 1924-11-29
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Expires: 1944-05-09
Abstract
No abstract record available.
Inventors
- 👤 Martha Helbling-Erpf
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-02 22:46
CPC Classifications
C; C10; C10G; C10G19/00; C10G29/00
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References Cited (Backward Citations)
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