Granted Patent
Utility
US 6,684,659 · App. 09/979,047
Refrigerator and defrosting heater
Inventors:
Masaaki Tanaka, Takeshi Shimizu, Koichi Nishimura
Patented Case
View Patent ↗
Granted: Feb 3, 2004
Filed: Nov 15, 2001
Inventors
Masaaki Tanaka
Takeshi Shimizu
Koichi Nishimura
Assignee (at issue)
Matsushita Refrigeration 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.