Inventor

JAUCH KARL

CH2 patents

⚠️ This page may combine multiple inventors who share the name “JAUCH KARL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SODECO COMPTEURS DE GENEVE

1 patent

US4504084AMar 12, 1985

Documents containing information invisible to the naked eye

SODECO COMPTEURS DE GENEVE170 citations93

LANDIS & GYR AG

1 patent

US4537504AAug 27, 1985

Security blank with enhanced authenticating features, and a method and an apparatus for determining the genuineness of the security blank

LANDIS & GYR AG100 citations91