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Herman E. Knappe — 2 Patents

TCThe Cherry-Burrell: 2 patents #1 of 12Top 9%

Cedar Rapids, IA: #602 of 1,358 inventorsTop 45%

Iowa: #6,154 of 15,303 inventorsTop 45%

Overall (All Time): #1,709,992 of 4,157,543Top 45%

2 Patents All Time

Herman E. Knappe has been granted 2 US patents while listed as an inventor at The Cherry-Burrell. The first was granted in 1983 and the most recent in November 1984. Herman E. Knappe ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Herman E. Knappe in Cedar Rapids, IA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
4483360	Actuator mechanism for double-block and vent valve	James W. Scott	1984-11-20
4373545	Double block and vent valve	—	1983-02-15	$32,000

Herman E. Knappe — 2 Patents

Issued Patents All Time

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