Assignee

NFO RESEARCH INC

US·2 granted patents·18 citations·filing 1987–1987

Technology mixG09B1 G11B1 H04H1 H04N1

Top patents by PatentIndex Score

2 records

0143US4847718ACassette with erasing meansNFO RESEARCH INC·Filed 1987·Granted Jul 11, 1989·8 cites·6 claims
0236US4891712AMethod of conducting marketing research by using video tape productionsNFO RESEARCH INC·Filed 1987·Granted Jan 2, 1990·10 cites·2 claims

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