Granted Patent
Utility
US 4,244,841 · App. 06/133,565
Method for recycling rubber and recycled rubber product
Inventor:
W. Howard Frankland
Patented Case
View Patent ↗
Granted: Jan 13, 1981
Filed: Mar 24, 1980
Inventor
W. Howard Frankland
Assignee (at issue)
Frankland Enterprises, Inc.
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.