Granted Patent
Utility
US 4,539,109 · App. 06/573,292
Drain system for fuel processor apparatus
Inventor:
Leland L. Davis
Patented Case
View Patent ↗
Granted: Sep 3, 1985
Filed: Jan 23, 1984
Inventor
Leland L. Davis
Assignee (at issue)
Davco Manufacturing Corporation
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.