Inventor

BROWN JR PHILLIP D

US2 patents

Patents

2 patents

US5220593AJun 15, 1993

Cellular radiotelephone credit card paystation method

GTE MOBILE COMM SERVINC242 citations96

US5144649ASep 1, 1992

Cellular radiotelephone credit card paystation method

GTE MOBILE COMM SERVINC209 citations96