Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Electrical property
Patent
1990-05-08
1992-09-01
Walsh, Donald P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Electrical property
D24225
Patent
active
D03290247
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patent: D218503 (1970-08-01), Perkinson
patent: 4112594 (1978-09-01), Impastato
patent: 4244916 (1981-01-01), Guigan
patent: 4357301 (1982-11-01), Cassaday et al.
patent: 4580896 (1986-04-01), Brickus et al.
patent: 4785184 (1988-11-01), Bicn et al.
patent: 4981361 (1991-01-01), Kobayashi et al.
patent: 4989983 (1991-02-01), Terada et al.
Davis Antoine D.
Palintest Ltd.
Walsh Donald P.
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