Granted Patent
Utility
US 6,084,844 · App. 09/045,100
Optical head assembly
Inventor:
Tadashi Takeda
Patented Case
View Patent ↗
Granted: Jul 4, 2000
Filed: Mar 20, 1998
Inventor
Tadashi Takeda
Assignee (at issue)
Sankyo Seiki Mfg. 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.