Patent US4521158A successfully refreshed from Google Patents.
Patent DE655414C successfully refreshed from Google Patents.
DE655414C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Armor plate hardened on one side with particularly high bullet resistance
Assignee: Krupp Stahl AG
•
Filing: 1932-05-27
•
Granted: 1938-01-17
•
Expires: 1952-05-27
Abstract
No abstract record available.
Inventors
- 👤 Hans Werner Schrader
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-03 20:26
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/52; F; F41; F41H; F41H5/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.