Granted Patent
Utility
US 4,672,816 · App. 06/768,231
Cooling system with device for preventing a bad odor from circulating
Inventor:
Tadahiro Takahashi
Patented Case
View Patent ↗
Granted: Jun 16, 1987
Filed: Aug 22, 1985
Inventor
Tadahiro 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.