DR

David S. Ritchie

BL Barr & Stroud Limited: 3 patents #6 of 58Top 15%
Overall (All Time): #1,668,943 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4964724 Radiation receiving mast 1990-10-23
4418361 Tracking link Ralph H. Bagnall-Wild, Gordon Raymond Smith, John H. Stewart 1983-11-29
4246612 Optical raster scanning system Peter J. Berry 1981-01-20