Inventor

ASCHERFELD MARGARETA

DE3 patents

Patents

3 patents

US4373137AFeb 8, 1983

Radiation detection and receiving in nondispersive infrared gas analyzer

HARTMANN & BRAUN AG11 citations70

US3970387AJul 20, 1976

Nondispersion, two beam, infrared gas analyzer

HARTMANN & BRAUN AG10 citations70

US4306153ADec 15, 1981

Nondispersive infrared gas analyzer

HARTMANN & BRAUN AG1 citations49