Granted Patent
Utility
US 4,229,475 · App. 05/962,698
Permeable dryer cycle fabric softener sheet
Inventors:
John H. Barrett, Brian P. Flynn
Patented Case
View Patent ↗
Granted: Oct 21, 1980
Filed: Nov 20, 1978
Inventors
John H. Barrett
Brian P. Flynn
Assignee (at issue)
PUREX CO., LTD.
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.