Vaughn R. Johnston

📍 Washington, PA: #122 of 552 inventorsTop 25%

🗺 Pennsylvania: #15,920 of 74,527 inventorsTop 25%

Overall (All Time): #1,030,454 of 4,157,543Top 25%

Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #	Title	Co-Inventors	Date
7392860	Stripper rubber on a steel core with an integral sealing gasket	—	2008-07-01
4955436	Seal apparatus	—	1990-09-11
4889196	Diverter apparatus	—	1989-12-26
4531591	Drilling head method and apparatus	—	1985-07-30
4486025	Stripper packer	—	1984-12-04