P
PatentIndex
Search
Landscape
Sign in
Inventor
KITAZAWA SHUJI
JP
2 patents
Patents
2 patents
US6208935B1
Mar 27, 2001
Map application system
HITACHI LTD
78 citations
94
US6708183B1
Mar 16, 2004
Spatial information search system
HITACHI LTD
20 citations
89