Granted Patent
Utility
US 4,533,636 · App. 06/526,496
Medium for plant protoplast culture
Inventor:
Ning-Sun Yang
Patented Case
View Patent ↗
Granted: Aug 6, 1985
Filed: Aug 25, 1983
Inventor
Ning-Sun Yang
Assignee (at issue)
Agracetus Madison Corporation
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.