Granted Patent
Utility
US 4,871,899 · App. 07/180,631
Titiable electric thermode for multiple connection reflow soldering
Inventor:
Gerald Dufrenne
Patented Case
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Granted: Oct 3, 1989
Filed: Apr 4, 1988
Inventor
Gerald Dufrenne
Assignee (at issue)
Unitek
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.