Intensitron Trademarks

INTENSITRON
earthquake instrument that measures and displays intensity in addition to activating audible alarms
Abandoned  ·  June 3, 1991  ·  74172645  · 
INTENSITRON
spectral line emitting lamps, and more particularly hollow cathode lamps used as spectral line sources for optical spectroscopy
Cancelled  ·  October 19, 1990  ·  74107244  · 
INTENSITRON
SPECTRAL LINE EMITTING LAMPS, AND MORE PARTICULARLY HOLLOW CATHODE LAMPS USED AS SPECTRAL LINE SOURCES FOR OPTICAL SPECTROSCOPY
Expired  ·  May 21, 1969  ·  72327954  ·