Patent DE645025C successfully refreshed from Google Patents.
DE645025C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Monitoring device for those hot water storage tanks that contain varying amounts of hot and cold water
Assignee: Siemens and Halske AG
•
Filing: 1934-12-09
•
Granted: 1937-05-20
•
Expires: 1954-12-09
Abstract
No abstract record available.
Inventors
- 👤 Dr Heinz Gruess
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-06 14:57
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F24H9/2007; F24H9/2014; F24H9/2021
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.