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Robert L. Trapp

📍 Laurel, MD: #4 of 19 inventorsTop 25%
🗺 Maryland: #225 of 1,164 inventorsTop 20%
Overall (1989): #60,716 of 140,708Top 45%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4831683 Vacuum cleaner Clarence P. Kroll, Craig NEAL 1989-05-23