Granted Patent
Utility
US 4,534,781 · App. 06/402,314
Mushroom supplement containing protein and a time delay coating
Inventors:
Lung-chi Wu, Carl W. Bretzloff, deceased
Patented Case
View Patent ↗
Granted: Aug 13, 1985
Filed: Jul 27, 1982
Inventors
Lung-chi Wu
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.