Granted Patent
Utility
US 4,462,693 · App. 06/115,184
Material mixing apparatus
Inventors:
Floyd E. Buschbom, Donald L. Henke
Patented Case
View Patent ↗
Granted: Jul 31, 1984
Filed: Jan 25, 1980
Inventors
Floyd E. Buschbom
Donald L. Henke
Assignee (at issue)
Veda Incorporated
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.