John K. Heyl

📍 Shrub Oak, NY: #22 of 28 inventorsTop 80%

🗺 New York: #67,335 of 115,490 inventorsTop 60%

Overall (All Time): #4,103,633 of 4,157,543Top 100%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4181955	Apparatus for producing photographic slides	Phillip S. Mittelman, Leon Malin	1980-01-01