Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Weight – force or density
Patent
1992-11-13
1993-12-28
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Weight, force or density
D10 83
Patent
active
D03426882
REFERENCES:
patent: D263568 (1982-03-01), Sadler
patent: D274134 (1984-06-01), Sadler
patent: 3672219 (1972-06-01), Van Patten
patent: 4884445 (1989-12-01), Sadoff et al.
Davis Antoine D.
Douglas Alan P.
Jenkins Richard E.
Pratt Burnerd International, Ltd.
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