DE1036742B
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Device for the production of dimensionally accurate hollow pre-stressed concrete slabs with reinforced lower and upper pressure zones made of fine concrete
Assignee: Individual
•
Filing: 1952-12-17
•
Granted: —
•
Expires: 1972-12-17
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-06 02:06
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/0088; B28B1/00; B28B1/08; B28B1/084; B28B19/00; B28B23/00; B28B23/02; B28B23/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.