Inventor
DRAGOMIR NICHOLAS A
US4 patents
Patents
4 patentsUS5243784ASep 14, 1993
Limit switch arrangement for garage door operator
GMI HOLDINGS INC27 citations91
US5221869AJun 22, 1993
Motor assembly for chain-drive garage door operator
GMI HOLDINGS INC24 citations89
US5568704AOct 29, 1996
Clutchless screw drive door operator
GMI HOLDINGS INC13 citations71
US5664372ASep 9, 1997
Clutchless screw drive door operator
GMI HOLDINGS INC12 citations62