Jack M. Grubbs — 2 Patents

STSeiscor Technologies: 2 patents #3 of 9Top 35%

Tulsa, OK: #825 of 2,344 inventorsTop 40%

Oklahoma: #4,502 of 12,736 inventorsTop 40%

Overall (All Time): #2,338,508 of 4,157,543Top 60%

2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4768227	Coil operated telephone	Lee V. Dively	1988-08-30
4698840	Coin operated telephone	Lee V. Dively	1987-10-06