Inventor

HOFMANN WILFRIED

DE31 patents

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

HOFMANN WILFRIED

AGFA GEVAERT AG

Rear-projection viewing screen

Cover for vacuum ink printing head

Microfilm pickup camera with marking means for screened originals

Microfilm sensing device with a projection lamp and cold-light mirror

Irradiating system for line-by-line copier

Microfilm reader

Portable microfilm reader

Collapsible microfilm reader

Apparatus for optical scanning of microfilms or the like

Cartridge for strip-shaped record carriers

Microfilm reader

Microfilm reader

Microfiche reader

Continuous microfilming camera

Autoloading microfiche reader

NFT NANOFILTERTECHNIK GMBH

Refrigeration device and a method for producing the same

Filter device comprising integral centrifugal separation

Heat exchanger

Heat-exchanging device

Filter device

Method for producing a filter

Method for producting a filter

HOFMANN WILFRIED

Rack

Multistage heat exchanging duct comprising a parallel conduit

Frame piece for a rack

SIEMENS AG

Method for controlling bi-directional switches in matrix converters

Systems containing a double fed induction machine and a fly wheel, and methods of operating such systems

NFT NONOFILTERTECHNIK GMBH

Filter element and method for the production thereof

NICOLAI WALTER

Air-conditioning system for electronic components

PUTZMEISTER ENGINEERING GMBH

Concrete pump and method for supporting a concrete pump

AGFA GEVAERT

Apparatus for retrieving microimages