Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Plural ranges – scales or registration rates
Patent
1995-03-31
1996-10-01
Karlsen, Ernest F.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Plural ranges, scales or registration rates
324 96, 324133, G01R 1508, G01R 1900
Patent
active
055613659
ABSTRACT:
A display system comprises a display area for exhibiting in a selective color a digital value, comparator for developing a signal in accordance with a relation of the digital value to a limit, and color control for illuminating the exhibited digital value in a color in accordance with the signal.
REFERENCES:
patent: 2643344 (1953-06-01), McLaren et al.
patent: 2648015 (1953-08-01), Greenfield et al.
patent: 2682000 (1954-06-01), Clayton et al.
patent: 4831326 (1989-05-01), Havel
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