Granted Patent
Utility
US 4,200,415 · App. 05/930,715
Material loading device
Inventor:
Douglas J. Boring
Patented Case
View Patent ↗
Granted: Apr 29, 1980
Filed: Aug 3, 1978
Inventor
Douglas J. Boring
Assignee (at issue)
CONAIR 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.