Inventor
LYNCH DANIEL
US10 patents
⚠️ This page may combine multiple inventors who share the name “LYNCH DANIEL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KEPTEL INC
8 patentsUS4937851AJun 26, 1990
Loop status verification system
KEPTEL INC49 citations90
US4864598ASep 5, 1989
Loop status verification system
KEPTEL INC26 citations90
US4686696AAug 11, 1987
Transmission line signal sensing circuit employing means for conserving power, especially for use with a telephone disconnect circuit, and associated method
KEPTEL INC22 citations81
US4679224AJul 7, 1987
Telephone line testing circuit
KEPTEL INC21 citations81
US4701949AOct 20, 1987
Frequency responsive party telephone line selection apparatus and method
KEPTEL INC11 citations73
US4550225AOct 29, 1985
AC Signal-activated switching apparatus
KEPTEL INC14 citations73
US4788710ANov 29, 1988
Telephone line selection and isolation method and apparatus
KEPTEL INC7 citations72
US4682347AJul 21, 1987
Telephone line selection and isolation method and apparatus
KEPTEL INC9 citations72