DE830404C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Self-supporting hollow-core slab made of lightweight concrete or normal gravel concrete
Assignee: Individual
•
Filing: 1940-12-31
•
Granted: 1952-02-04
•
Expires: 1960-12-31
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-05 06:15
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/20; E04C3/26; E04B; E04B5/00; E04B5/02; E04B5/04; E04B5/043
Claims Analysis
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