Granted Patent
Utility
US 4,610,374 · App. 06/665,585
Apparatus for mixing flowable materials in sealed containers
Inventor:
John D. Buehler
Patented Case
View Patent ↗
Granted: Sep 9, 1986
Filed: Oct 29, 1984
Inventor
John D. Buehler
Assignee (at issue)
Dougherty Brothers 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.