MODEL# SERIES	PATENT(S)
DS-110	US 7,849,781
DS-111	US 7,849,781
DS-112	US 7,849,781
DS-130	US 7,849,781
DS-131	US 7,849,781
DS-132	US 7,849,781
DS-180	US 7,849,781
DS-181	US 7,849,781
DS-182	US 7,849,781
DS-190	US 7,849,781
DS-191	US 7,849,781
DS-192	US 7,849,781
DS-390	US 7,849,781
DS-391	US 7,849,781
DS-392	US 7,849,781
DS-390-C	US 7,849,781
DS-391-C	US 7,849,781
DS-392-C	US 7,849,781
SP-111	US 7,849,781
SP-131	US 7,849,781
SP-181	US 7,849,781
SP-191	US 7,849,781
DS-BCA	US 8,001, 880	US 7,849,781
DS-BCN	US 8,001, 880	US 7,849,781
DS-BCG	US 8,001, 880	US 7,849,781
DS-BCC	US 8,001, 880	US 7,849,781
DS-BCB	US 8,001, 880	US 7,849,781
DS-RCG	US 8,001, 880	US 7,849,781
DS-RCG	US 8,001, 880	US 7,849,781
DS-RCG	US 8,001, 880	US 7,849,781
DS-GHW	US 8,291,657
DS-MD	US D639 377