Granted Patent
Utility
US 4,519,443 · App. 06/312,619
Window pane defroster device with vehicle air conditioning apparatus
Inventors:
Shinji Sutoh, Toshizo Hara, Akiyoshi Takahashi
Patented Case
View Patent ↗
Granted: May 28, 1985
Filed: Oct 19, 1981
Inventors
Shinji Sutoh
Toshizo Hara
Akiyoshi Takahashi
Assignee (at issue)
Diesel Kiki 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.