FR1037050A
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FR
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Assignee: Heinrich Helfgen
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Filing: 1951-05-12
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Granted: 1953-09-14
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Expires: 1971-05-12
Abstract
No abstract record available.
Inventors
- 👤 Heinrich Helfgen
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-05 17:20
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/005
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References Cited (Backward Citations)
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