Sputter-ion pump for use with electron tubes having thoriated tu

Sputter-ion pump having improved cooling and improved magnetic c

Submersible single phase electromagnetic pumping assembly for li

Temperature-responsive mobile shielding device between a...

Thrust generator

Trap apparatus

Vacuum device having a getter device

Vacuum gettering arrangement

Vacuum insulated stem injection tubing

Vacuum maintenance device for high vacuum chambers

Vacuum micropump and gauge

Vacuum regeneration method for a flywheel system

Valve arrangement for pump or compressor

Variable potential electrokinetic device

Water vapor releasing composition of matter and device, and proc