Granted Patent
Utility
US 4,913,478 · App. 07/283,379
Grain bin door board latch
Inventor:
Rodney B. Grossman
Patented Case
View Patent ↗
Granted: Apr 3, 1990
Filed: Dec 12, 1988
Inventor
Rodney B. Grossman
Assignee (at issue)
CTB HOLDINGS LLC
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.