DE627447C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Plate heat exchangers for various types of corrosive fluids
Assignee: RICHARD SELIGMAN DR
•
Filing: 1934-05-15
•
Granted: 1936-03-16
•
Expires: 1954-05-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-03 07:44
CPC Classifications
F; F28; F28D; F28D9/00; F28D9/0062; F28D9/0075; F28F; F28F2250/00; F28F2250/10; F28F2250/102
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.