Assignee
VISUAL SYSTEMS CORP
3 granted patents·18 citations·filing 1978–1980
Top patents by PatentIndex Score
3 records- 0157US4219737ASelf regulating microfilm frame detection circuitVISUAL SYSTEMS CORP·Filed 1978·Granted Aug 26, 1980·14 cites·13 claims
- 0230US4310751AMicrofilm indexing machineVISUAL SYSTEMS CORP·Filed 1979·Granted Jan 12, 1982·3 cites·2 claims
- 0320US4338519AAdjustable blip sensor interface for microfilm reader and microfilm reader printersVISUAL SYSTEMS CORP·Filed 1980·Granted Jul 6, 1982·1 cites·10 claims
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