Granted Patent
Utility
US 4,906,276 · App. 06/926,210
Plant transplant and plant preservation medium
Inventor:
John Hughes
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Nov 3, 1986
Inventor
John Hughes
Assignee (at issue)
American Colloid 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.