H01J 41 - Discharge tubes and means integral therewith for measuring gas pressure; Discharge tubes for evacuation by diffusion of ions

Patents for H01J 41 - Discharge tubes and means integral therewith for measuring gas pressure; Discharge tubes for evacuation by diffusion of ions (509)
09/1977
09/06/1977	US4047102 Dual chamber, high sensitivity gas sensor and pump
05/1977
05/03/1977	US4021671 Ionization detector
03/1977
03/22/1977	US4013913 Ion detection electrode arrangement
03/15/1977	US4012729 Multi-element ionization chamber
02/1977
02/08/1977	US4007374 Ionization detector with improved radiation source
12/1976
12/28/1976	US4000457 Cold cathode ionization gauge control for vacuum measurement
11/1976
11/30/1976	US3994625 Sputter-ion pump having improved cooling and improved magnetic circuitry
08/1976
08/31/1976	US3977849 Sorption pump
03/1976
03/23/1976	US3946374 Rate-of-change combustion and contamination detection device

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