Granted Patent
Utility
US 4,617,047 · App. 06/711,006
Mushroom supplement
Inventor:
Carl W. Bretzloff, deceased
Patented Case
View Patent ↗
Granted: Oct 14, 1986
Filed: Mar 12, 1985
Inventor
Carl W. Bretzloff, deceased
Assignee (at issue)
Campbell Soup 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.