Granted Patent
Utility
US 4,438,534 · App. 06/354,485
Passive dispenser
Inventors:
George B. Keyes, Randall Richards
Patented Case
View Patent ↗
Granted: Mar 27, 1984
Filed: Mar 3, 1982
Inventors
George B. Keyes
Randall Richards
Assignee (at issue)
The Drackett 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.