← Back to Patent Explorer
DE1136898B Expired / Lapsed DE ⏱️ 0.0 years remaining

Filter for air raids or the like.

Assignee: Draegerwerk AG and Co KGaA
•
Filing: 1958-01-20
•
Granted: —
•
Expires: 1978-01-20
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

No inventors recorded.

Bibliographic Details

Application Number —
Jurisdiction DE
Data Source google_patents
Last Synchronized 2026-11-03 02:00
CPC Classifications
A; A62; A62B; A62B13/00; E; E04; E04H; E04H9/00; E04H9/04; F; F24; F24F; F24F8/00; F24F8/10; F24F8/108

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

DE951329C Cited
DE1011733B Cited

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag