Granted Patent
Utility
US 5,842,649 · App. 08/883,580
Precision placement spreader
Inventors:
Glenn M. Beck, Edwin A. Friedl
Patented Case
View Patent ↗
Granted: Dec 1, 1998
Filed: Jun 26, 1997
Inventors
Glenn M. Beck
Edwin A. Friedl
Assignee (at issue)
Louis Berkman Company
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.