Granted Patent
Utility
US 6,424,830 · App. 08/867,076
Portable data collection network with telephone and voice mail capability
Inventors:
Timothy P. O'Hagan, Ynjium P. Wang
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Jun 2, 1997
Inventors
Timothy P. O'Hagan
Ynjium P. Wang
Assignee (at issue)
TELXON 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.