Granted Patent
Utility
US 4,629,852 · App. 06/579,658
Regulator circuit for control of heat output of a heating element
Inventor:
Wolfram K. Andre
Patented Case
View Patent ↗
Granted: Dec 16, 1986
Filed: Feb 13, 1984
Inventor
Wolfram K. Andre
Assignee (at issue)
Kurt Wolf & Co. KG
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.