Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Chemical
Patent
1994-02-28
1995-05-09
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Chemical
D10 46, D10 75
Patent
active
D03581055
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patent: D328714 (1992-08-01), Nakajima et al.
patent: 4044604 (1977-08-01), Russ
patent: 4648264 (1987-03-01), Freese et al.
Davis Antoine D.
Douglas Alan P.
On-Site Analysis, Inc.
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