John Cromrich — 2 Patents at Unknown

John Cromrich has been granted 2 US patents while listed as an inventor at Unknown. The first was granted in 1989 and the most recent in October 1990. John Cromrich ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list John Cromrich in Clancy, MT, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4963305	Insulated face brick	Lynn B. Cromrich	1990-10-16
4831802	Insulated face brick	Lynn B. Cromrich	1989-05-23

John Cromrich — 2 Patents

Issued Patents All Time

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