WK

Warren D. Knowles

TL The Singer Company Limited: 3 patents #94 of 510Top 20%
📍 Clark, NJ: #70 of 186 inventorsTop 40%
🗺 New Jersey: #23,480 of 69,400 inventorsTop 35%
Overall (All Time): #1,685,153 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4242975 Needle support means Lionel J. Coulombe 1981-01-06
4213411 Readily attachable and detachable sole plate for a sewing machine 1980-07-22
4183311 Snap-on presser foot plate 1980-01-15