P

Inventor

KELLER HANS

CH13 patents
⚠️ This page may combine multiple inventors who share the name “KELLER HANS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HELL RUDOLF DR ING GMBH

4 patents
US4084183AApr 11, 1978

Method for the electro-optical reproduction of half-tone pictures

HELL RUDOLF DR ING GMBH59 citations91
US4110826AAug 29, 1978

Apparatus and process for color-identification

HELL RUDOLF DR ING GMBH46 citations87
US4649423AMar 10, 1987

Method and circuit arrangement for selective correction of hues and colors

HELL RUDOLF DR ING GMBH23 citations81
US4293872AOct 6, 1981

Production of printing blocks or forms

HELL RUDOLF DR ING GMBH4 citations62

KELLER HANS

3 patents
US9097355B2Aug 4, 2015

Valve for integrating into a sanitary appliance

KELLER HANS7 citations82
US4328689AMay 11, 1982

Spring bolt combination lock

KELLER HANS19 citations70
US8789214B2Jul 29, 2014

Method and device for determining maintenance intervals

KELLER HANS0 citations39

ITT

2 patents
US3944854AMar 16, 1976

Light-emitting diode connected to a coil

ITT44 citations92
US3939436AFeb 17, 1976

Reverberation device

ITT4 citations62

(unassigned)

1 patent
US6286153B1Sep 11, 2001

Stench trap for a urinal

74 citations95

GEBERIT AG

1 patent
US4493985AJan 15, 1985

Welding sleeve

GEBERIT AG36 citations92

AESCULAP WERKE AG

1 patent
US4765314AAug 23, 1988

Device for introducing an endoscope or a surgical tool into body cavities with a feed for a flushing medium and an extractor for said flushing medium

AESCULAP WERKE AG48 citations85

ENSWICO IP AG

1 patent
USD618322SJun 22, 2010

Urinal

ENSWICO IP AG10 citations79