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Christopher Chapman

EL Electrotextiles Company Limited: 2 patents #1 of 2Top 50%
📍 Fond du Lac, WI: #1 of 35 inventorsTop 3%
🗺 Wisconsin: #130 of 2,880 inventorsTop 5%
Overall (2005): #26,039 of 245,428Top 15%
3
Patents 2005

Issued Patents 2005

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6947031 Data processing apparatus with replacement keyboard David Lee Sandbach 2005-09-20
6891527 Processing signals to determine spatial positions David Lee Sandbach, Anthony Richard Hardie-Bick 2005-05-10
6861961 Foldable alpha numeric keyboard David Lee Sandbach 2005-03-01