Patent · US Expired

Heating method and apparatus

US4307776A · kind A · utility

5Cited by

6References

9Claims

0Family size

Inventors

Wolfgang Grun · Ratingen, DE
Ing Grun · Ratingen, DE

Key dates

Filing date	Nov 29, 1978
Grant date	Dec 29, 1981
Priority date	—
Expiry date	Nov 29, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/44
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

Process and equipment for the exchange of heat between flows of a medium flowing in and out of a building, and facade assemblies in which the process is implemented.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.