Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Electrical property
Patent
1991-10-23
1993-04-20
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Electrical property
Patent
active
D03348938
REFERENCES:
patent: D276028 (1984-10-01), Crotty et al.
patent: D281401 (1985-11-01), Perrins
patent: 3594767 (1971-07-01), Link
patent: 4587590 (1986-05-01), Bala
patent: 4591942 (1986-03-01), Willard
patent: 4733321 (1988-03-01), Lindeperg
Davis Antoine D.
Douglas Alan P.
Gernstein Terry M.
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