FR590748A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Pure artificial bitumen extracted from coal tar and its manufacturing process
Assignee: Robert-Joseph Lacau
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Filing: 1925-02-16
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Granted: 1925-06-22
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Expires: 1945-02-16
Abstract
No abstract record available.
Inventors
- 👤 Robert-Joseph Lacau
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-28 11:17
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/08
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References Cited (Backward Citations)
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