pH meter

Details pH meter pH meter

1987-09-04

1990-11-27

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Chemical

Patent

active

D03124215

REFERENCES:
patent: D206004 (1966-10-01), Perkins et al.
patent: D206158 (1966-12-01), Perkins et al.
patent: D211058 (1968-05-01), Neubrech
patent: D212124 (1968-08-01), Feldman
patent: D217101 (1970-04-01), Feldman
patent: D224048 (1972-06-01), Bauer
patent: D226271 (1973-02-01), Holtzman
patent: 2546093 (1951-03-01), Gilbert
patent: 4090925 (1978-05-01), Jungman
patent: 4696189 (1987-09-01), Hochreuther
Transcat, pH/mV/Temperature Meter, 1986, p. 370.

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