Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Electrical property
Patent
1994-04-05
1995-05-16
Davis, Antoine Duval
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Electrical property
Patent
active
D03583490
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patent: 4071824 (1978-01-01), Kernander et al.
patent: 5349289 (1994-09-01), Shirai
Extech Instruments; Clamp-on Multimeters; .COPYRGT.1990; pp. 26 & 27.
Davis Antoine Duval
Kyoritsu Electrical Instruments Works, Ltd.
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