DE855717C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Pipe arrangement for water tube boilers and heat exchangers
Assignee: Weser AG
•
Filing: 1942-06-05
•
Granted: 1952-11-17
•
Expires: 1962-06-05
Abstract
No abstract record available.
Inventors
- 👤 Richard Koeller
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-05 16:02
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/22; F22B37/225; F22B37/10; F22B37/14; F22B37/143; F22D; F22D1/00; F22D1/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1762180A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.