Patent US1258952A successfully refreshed from Google Patents.
Patent FR775996A successfully refreshed from Google Patents.
Patent DE971841C successfully refreshed from Google Patents.
DE971841C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Ceiling or wall radiation, heating or cooling system
Assignee: ALBRECHT KOLLMAR DR ING
•
Filing: 1952-09-07
•
Granted: 1959-04-02
•
Expires: 1972-09-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-09 01:05
CPC Classifications
F; F24; F24D; F24D3/00; F24D3/12; F24D3/16; F24D3/165; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.