Granted Patent
Utility
US 4,312,504 · App. 05/888,188
System for converting synthetic turf surfaces from one to another condition
Inventors:
Loren R. Rutledge, James B. Siegle
Patented Case
View Patent ↗
Granted: Jan 26, 1982
Filed: Mar 20, 1978
Inventors
Loren R. Rutledge
James B. Siegle
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.