Granted Patent
Utility
US 4,656,468 · App. 06/575,986
Pattern data processing apparatus
Inventors:
Kei Takikawa, Hirofumi Kanemaki
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Feb 1, 1984
Inventors
Kei Takikawa
Hirofumi Kanemaki
Assignees (at issue)
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
SONY GROUP CORPORATION
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.