David C. Rohrer — 3 Patents at Proform

David C. Rohrer has been granted 3 US patents while listed as an inventor at Proform. The first was granted in 1987 and the most recent in July 2002. David C. Rohrer ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list David C. Rohrer in Gaston, OR, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
6422785	Track belt placer for placing construction materials and method for placing construction materials	Thomas A. Ruggles	2002-07-23
4721428	Tennis ball retriever	Daniel Rohrer	1988-01-26
4684126	General purpose exercise machine	William T. Dalebout, Sohrab Vassoughi, William J. Martinell, Steven W. Martinell, Robert L. Marchant	1987-08-04

David C. Rohrer — 3 Patents

Issued Patents All Time

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