Frederick A. Vitringa — 2 Patents at Geosource

Frederick A. Vitringa has been granted 2 US patents while listed as an inventor at Geosource. The first was granted in 1986 and the most recent in August 1987. Frederick A. Vitringa ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Frederick A. Vitringa in Quathiaski Cove, BC, CA.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4685094	Lateral compliance device for geophone springs	Arend L. Hagedoorn	1987-08-04
4623991	Delta-shaped geophone spring	—	1986-11-18

Frederick A. Vitringa — 2 Patents

Issued Patents All Time

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