Patent DE690676C successfully refreshed from Google Patents.
← Back to Patent Explorer
DE690676C Expired / Lapsed DE ⏱️ 0.0 years remaining

Waste heat boiler for utilizing roast gases with a high content of acid fumes

Assignee: OESTERREICHISCHE DYNAMIT NOBEL
•
Filing: 1938-06-19
•
Granted: 1940-05-04
•
Expires: 1958-06-19
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Dr Heinrich Hiller
  • 👤 Ing Rudolf Pitz

Bibliographic Details

Application Number —
Jurisdiction DE
Data Source google_patents
Last Synchronized 2026-11-04 02:06
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/02; F22B1/18; F22B1/1884

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.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag