JH

John P. Holt

📍 Ladue, MO: #16 of 43 inventorsTop 40%
🗺 Missouri: #6,609 of 23,789 inventorsTop 30%
Overall (All Time): #1,612,581 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6634721 Trailer locking device 2003-10-21
4253590 Dry heat setting refractory and methods of using same Theodore P. Cash 1981-03-03
4231800 Dry heat setting refractory and methods of using same Theodore P. Cash 1980-11-04