Granted Patent
Utility
US 4,260,506 · App. 06/006,720
Hydraulic pressure device utilizing biodegradable halogenated diphenyl methanes
Inventors:
Ralph H. Munch, Quentin E. Thompson
Patented Case
View Patent ↗
Granted: Apr 7, 1981
Filed: Jan 26, 1979
Inventors
Ralph H. Munch
Quentin E. Thompson
Assignee (at issue)
Monsanto 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.