John E. Shaunfield — 3 Patents at Spectronics

John E. Shaunfield has been granted 3 US patents while listed as an inventor at Spectronics. The first was granted in 1983 and the most recent in February 1999. John E. Shaunfield ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list John E. Shaunfield in Richardson, TX, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
5867484	Switchable multi-drop video distribution system	—	1999-02-02
RE34063	Monitoring torque in tubular goods	Darrell L. Vincent, Larry W. Vincent	1992-09-15
4400054	Passive optical coupler	James R. Biard, Royce S. Speer	1983-08-23

John E. Shaunfield — 3 Patents

Issued Patents All Time

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