Granted Patent
Utility
US 5,246,573 · App. 07/722,987
Cog rake bar screen
Inventors:
John C. Lodholz, Allen N. Bolte
Patented Case
View Patent ↗
Granted: Sep 21, 1993
Filed: Jun 28, 1991
Inventors
John C. Lodholz
Allen N. Bolte
Assignee (at issue)
FMC 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.