HK

Horace A. Knowles

UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 Washington, DC: #1,086 of 3,063 inventorsTop 40%
🗺 District of Columbia: #1,086 of 3,063 inventorsTop 40%
Overall (All Time): #2,294,368 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5311835 Bookmark for identifying a location on a page — 1994-05-17
4227342 Thumb twiddling toy — 1980-10-14