Assignee
YAMASHITA MASAYO
JP·2 granted patents·76 citations·filing 1990–1991
Top patents by PatentIndex Score
2 records- 0169US5196966AMethod and implement for observing or photographing gem such as diamondYAMASHITA MASAYO·Filed 1991·Granted Mar 23, 1993·41 cites·37 claims
- 0264US5260763AInstrument for observing jewels' brilliance as diamond, and method of taking photographs with said instrumentYAMASHITA MASAYO·Filed 1990·Granted Nov 9, 1993·35 cites·53 claims
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