Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Chemical
Patent
1992-12-18
1994-04-05
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Chemical
D32 31
Patent
active
D03457079
REFERENCES:
patent: D209573 (1967-12-01), Leinfelt
patent: 5136750 (1992-08-01), Takashima et al.
patent: 5163202 (1992-11-01), Kawakami et al.
patent: 5233682 (1993-08-01), Abe et al.
Davis Antoine D.
Douglas Alan P.
Haken Jack E.
U.S. Philips Corporation
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