Granted Patent
Utility
US 5,707,272 · App. 08/701,015
Polishing apparatus for a CRT glass panel and a method of polishing the glass panel
Inventors:
Takeshi Hashimoto, Masatsugu Yamanaka, deceased, Hiroyuki Ugajin, Tomoya Takigawa
Patented Case
View Patent ↗
Granted: Jan 13, 1998
Filed: Aug 21, 1996
Inventors
Takeshi Hashimoto
Masatsugu Yamanaka, deceased
Hiroyuki Ugajin
Tomoya Takigawa
Assignee (at issue)
ASAHI GLASS 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.