DRYSCREW
Measuring, regulating and control apparatus for vacuum pumps and vacuum pump stands, not parts of machines, namely, electric motor control units; vacuum chamber apparatus for laboratory use; automatic vacuum chamber regulating apparatus; measuring apparatus for measuring electricity; testing apparatus for testing vacuum pumps and recipients; leak detectors for vacuum pumps and recipients; residual gas analyzers; electrical conductors in the nature of vacuum-tight, mechanical and electrical fe...
Registered · April 13, 2018 · 79237731 ·