Granted Patent
Utility
US 4,660,387 · App. 06/821,547
Controls for refrigerating or air-conditioning units
Inventor:
Yutaka Usami
Patented Case
View Patent ↗
Granted: Apr 28, 1987
Filed: Jan 22, 1986
Inventor
Yutaka Usami
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.