Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1990-09-17
1992-11-17
Walsh, Donald P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
D10 49
Patent
active
D03310248
REFERENCES:
patent: D314155 (1991-01-01), Toivonen
patent: 2571628 (1951-10-01), Stanley
patent: 3771364 (1973-11-01), Worthington
patent: 3855863 (1974-12-01), Kuehn et al.
Davis Antoine D.
Walsh Donald P.
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