Robert Dunk — 2 Patents at Harsco

Robert Dunk has been granted 2 US patents while listed as an inventor at Harsco. All of these patents were granted in 1998. Robert Dunk ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Robert Dunk in Brentwood, TN, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
5799448	Adjustable closed-riser metal staircase system	—	1998-09-01	$7,942,000
D389588	Stair tread having a slip-resistant surface	—	1998-01-20

Robert Dunk — 2 Patents

Issued Patents All Time

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