Inventor
OKUMA YASUO
JP4 patents
Patents
4 patentsUS4511970AApr 16, 1985
Portable terminal device
HITACHI LTD86 citations94
US4482802ANov 13, 1984
Transaction handling system
HITACHI LTD74 citations90
US4734859AMar 29, 1988
Method and apparatus for handling transaction slips including illegible characters
HITACHI LTD10 citations69
US4525712AJun 25, 1985
Transaction processing system
HITACHI LTD15 citations66