Assignee
COOK LAB INC
2 granted patents·96 citations·filing 1975–1975
Technology mixG11B2
Top patents by PatentIndex Score
2 records- 0189US4086634AMethod and apparatus for preparing recorded program material to prevent unauthorized duplication by magnetic tape recordingCOOK LAB INC·Filed 1975·Granted Apr 25, 1978·69 cites·26 claims
- 0279US4040099AMethod and apparatus for preparing recorded program material to render detectable unauthorized magnetic tape duplications, and method and apparatus for detecting such duplicationsCOOK LAB INC·Filed 1975·Granted Aug 2, 1977·27 cites·39 claims
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