RJ

Roger B. Johnston

📍 Lafayette, CA: #217 of 569 inventorsTop 40%
🗺 California: #149,087 of 386,348 inventorsTop 40%
Overall (All Time): #1,641,072 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5819875 Apparatus and method for applying dry lubricant to cartridge case necks 1998-10-13
5378499 Method of applying abrasives to bullets for use in pressure (fire) lapping of gun barrels Merrill D. Martin, Howard E. Harrison 1995-01-03
5301436 Cartridge runout fixture 1994-04-12