Individual holder
VIRTANEN KALERVO M
FI·2 granted patents·11 citations·filing 1982–1985
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
2 records- 0129US4635032AMobile door closure interrupting detectorVIRTANEN KALERVO M·Filed 1985·Granted Jan 6, 1987·8 cites·5 claims
- 0227US4460849ADevice for regulating the power in electrical apparatuses, especially in fluorescent lighting fittingsVIRTANEN KALERVO M·Filed 1982·Granted Jul 17, 1984·3 cites·4 claims
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