Granted Patent
Utility
US 4,974,337 · App. 07/428,767
Apparatus and method of drying and dehumidifying plastic
Inventors:
Kaihan Tavakoli, Harold E. Weckerly
Patented Case
View Patent ↗
Granted: Dec 4, 1990
Filed: Oct 30, 1989
Inventors
Kaihan Tavakoli
Harold E. Weckerly
Assignee (at issue)
CONAIR LLC
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.