Inventor

PLOUFF DONALD A

US4 patents

⚠️ This page may combine multiple inventors who share the name “PLOUFF DONALD A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

GTE MOBILE COMM SERVINC

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

GTE NORTH INC

1 patent

US4918630AApr 17, 1990

Computer timing system having backup trigger switches for timing competitive events

GTE NORTH INC46 citations87

GEN TELEPHONE COMPANY OF INDIA

1 patent

US4696026ASep 22, 1987

Multiplexed terminal for monitoring and controlling a plurality of remote telephone switches

GEN TELEPHONE COMPANY OF INDIA3 citations57