Granted Patent
Utility
US 4,283,432 · App. 06/177,934
Natural beverage powders from dahlia extracts
Inventors:
William A. Mitchell, John Mitchell, Cheryl R. Mitchell
Patented Case
View Patent ↗
Granted: Aug 11, 1981
Filed: Aug 13, 1980
Inventors
William A. Mitchell
John Mitchell
Cheryl R. Mitchell
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.