Inventor · disambiguated record
Johan Helder
Also filed as: HELDER JOHAN
4 granted patents·50 citations·filing 1975–1976
75Inventor score
Files withSIEMENS AG4
Top patents by PatentIndex Score
4 records- 0177US4032414AElectroplating device and method for the partial plating of two-row pin stripsSIEMENS AG·Filed 1975·Granted Jun 28, 1977·30 cites·10 claims
- 0256US4035245AElectroplating device and method for the partial metalizing of elements in continuous transitSIEMENS AG·Filed 1975·Granted Jul 12, 1977·11 cites·11 claims
- 0337US4070265AElectroplating device for partially plating items in transitSIEMENS AG·Filed 1975·Granted Jan 24, 1978·5 cites·6 claims
- 0432US4108555ATwo-beam colorimeterSIEMENS AG·Filed 1976·Granted Aug 22, 1978·4 cites·5 claims
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