DE539770C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Device for drawing conical seam tubes from sheet metal
Assignee: JOHANN HEINEN
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Filing: —
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Granted: 1931-12-02
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Expires: 1948-12-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-30 20:14
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/16; B21C37/18; B21C37/185
Claims Analysis
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References Cited (Backward Citations)
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