FR889950A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Small heat recuperator
Assignee: REKUPERATOR K G DR ING SCHACK
•
Filing: 1943-01-13
•
Granted: 1944-01-24
•
Expires: 1963-01-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-02 09:56
CPC Classifications
F; F28; F28D; F28D21/00; F28D21/0001; F28D21/0003; F28D21/0005; F28D21/0008
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.