RD

Richard D'Alessandro

SP Spectra Precision: 1 patents #13 of 23Top 60%
Overall (All Time): #3,594,590 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6292258 Laser receiver with out-of-plumb indication and compensation Jonathan A Jackson, Edward E. Hart, Robert M. Perchak 2001-09-18