Carl E. Engle — 2 Patents at Hydro Tech

Carl E. Engle has been granted 2 US patents while listed as an inventor at Hydro Tech. The first was granted in 1981 and the most recent in April 1982. Carl E. Engle ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Carl E. Engle in Fremont, WI, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4326675	Honey pit fertilization system	Donald Moldenhauer	1982-04-27
4284246	Honey pit fertilization system	Don Moldenhauer	1981-08-18

Carl E. Engle — 2 Patents

Issued Patents All Time

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