Fred P. Perna — 3 Patents at Unknown

Fred P. Perna has been granted 3 US patents while listed as an inventor at Unknown. The first was granted in 1987 and the most recent in May 1989. Fred P. Perna ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Fred P. Perna in Anaconda, MT, US.

Patents per Year

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Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
4833697	Writing instrument for electronic counting and gravity switch reset	Stuart R. Peterson	1989-05-23
4726044	Writing instrument with solar-powered electronic counting and liquid cyrstal display	Stuart R. Peterson	1988-02-16
4694506	Foldable eyeshade	—	1987-09-22

Fred P. Perna — 3 Patents

Patents per Year

Issued Patents All Time

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