Patent DE638698C successfully refreshed from Google Patents.
DE638698C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Process for the production of high-pore artificial stone masses
Assignee: WOLFGANG CZERNIN DIPL ING
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Filing: 1933-08-01
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Granted: 1936-11-21
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Expires: 1953-08-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-04 20:22
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/18; C04B38/00; C04B38/08
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Total Claims: 0
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