Granted Patent
Utility
US 4,829,587 · App. 07/020,267
Fast bitonal to gray scale image scaling
Inventors:
Frank C. Glazer, John K. Trimper
Patented Case
View Patent ↗
Granted: May 9, 1989
Filed: Mar 2, 1987
Inventors
Frank C. Glazer
John K. Trimper
Assignee (at issue)
Digital Equipment 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.