Patent US407981A successfully refreshed from Google Patents.
Patent DE23583C successfully refreshed from Google Patents.
DE23583C
Active / In Force
DE
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Assignee: Dr. L. WEINEK in Leipzig und O. WIGAND in Zeitz
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Filing: —
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Granted: —
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Expires: —
Abstract
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Inventors
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Bibliographic Details
Application Number
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Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-28 09:41
CPC Classifications
G; G09; G09B; G09B29/00; G09B29/14
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