WK

William P. Ketcham

UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 Cos Cob, CT: #30 of 77 inventorsTop 40%
🗺 Connecticut: #15,609 of 34,797 inventorsTop 45%
Overall (All Time): #2,353,688 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D279173 Countdown timer — 1985-06-11
4451158 Countdown timer Stephen Selwyn 1984-05-29