Harold Perkel — 2 Patents at Tdf

Harold Perkel has been granted 2 US patents while listed as an inventor at Tdf. The first was granted in 1989 and the most recent in May 1996. Harold Perkel ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Harold Perkel in Levittown, PA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5513809	Cryogenic vibratory mill apparatus	—	1996-05-07
4863106	Process for low temperature comminution of scrap tires	—	1989-09-05

Harold Perkel — 2 Patents

Issued Patents All Time

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