DE613672C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Device for checking the tightness of gas protective masks
Assignee: Draegerwerk AG and Co KGaA
•
Filing: 1930-11-02
•
Granted: 1935-05-23
•
Expires: 1950-11-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-23 21:22
CPC Classifications
A; A62; A62B; A62B27/00
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.