Granted Patent
Utility
US 5,638,988 · App. 08/577,381
Particulate dispensing system
Inventors:
Kerry D. Rogers, Warren L. Hammerbeck, Joanne M. Hoyt, Richard A. Beardmore
Patented Case
View Patent ↗
Granted: Jun 17, 1997
Filed: Dec 22, 1995
Inventors
Kerry D. Rogers
Warren L. Hammerbeck
Joanne M. Hoyt
Richard A. Beardmore
Assignee (at issue)
Loveland Industries, 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.