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Walter Ahrens — 2 Patents

Alfeld, NE: #1 of 1 inventorsTop 100%

Overall (All Time): #2,369,412 of 4,157,543Top 60%

2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4286937	Production of sand moulds	—	1981-09-01
4250531	Switch-arc preventing circuit	—	1981-02-10