Granted Patent
Utility
US 6,087,639 · App. 09/350,617
Heating coil retainer bracket and method for manufacturing the same
Inventors:
Roger P. Engelke, Leon Lietch
Patented Case
View Patent ↗
Granted: Jul 11, 2000
Filed: Jul 9, 1999
Inventors
Roger P. Engelke
Leon Lietch
Assignee (at issue)
HART & COOLEY, INC.
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.