Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Regulator or control
Patent
1989-06-19
1992-09-22
Walsh, Donald P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Regulator or control
D10 49, D10 50, D10 52, D10 53
Patent
active
D03296172
REFERENCES:
patent: D198711 (1964-07-01), Reingruber
patent: 3352490 (1967-11-01), Dalzell et al.
patent: 3999158 (1976-12-01), Rae
patent: 4428528 (1984-01-01), Renault
Davis Antoine D.
Graesslin KG
Walsh Donald P.
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