Pocket colorimeter

Details Pocket colorimeter Pocket colorimeter

1991-01-07

1993-03-16

Douglas, Alan P.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Chemical

Patent

active

D03339920

REFERENCES:
patent: D318245 (1991-07-01), Sierra et al.
patent: D321488 (1991-11-01), Sierra et al.
patent: 4266877 (1981-05-01), Bodart
patent: 4349081 (1985-10-01), Ace
patent: 4986665 (1991-01-01), Yamanishi et al.
patent: 5013155 (1991-01-01), Rybak
patent: 5037614 (1991-08-01), Makita et al.
patent: 5083868 (1992-01-01), Anderson

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