BERNHARD KNUPFER DIPL ING has a total of 13 patent applications. Its first patent ever was published in 1927. It filed its patents most often in Germany. Its main competitors in its focus markets mechanical elements, audio-visual technology and machine tools are BONASIWEI VALVE CO LTD, ABB DISTRICT HEATING MANAGEMEN and ELECTROFAB & ENG.
# | Country | Total Patents | |
---|---|---|---|
#1 | Germany | 13 |
# | Industry | |
---|---|---|
#1 | Mechanical elements | |
#2 | Audio-visual technology | |
#3 | Machine tools |
# | Technology | |
---|---|---|
#1 | Venting or aerating devices | |
#2 | Hand-held cutting tools | |
#3 | Gearing | |
#4 | Special information storage | |
#5 | Pipes |
# | Name | Total Patents |
---|---|---|
#1 | Knupfer Dipl-Ing Bernhard | 1 |
#2 | Rosenthal Dipl-Ing Siegfried | 1 |
Publication | Filing date | Title |
---|---|---|
DE690754C | razor | |
DE609125C | Record holder | |
DE609128C | stopcock | |
DE574694C | Method for manufacturing an inclined seat valve | |
DE595054C | Bend | |
DE571550C | Inclined seat valve | |
DE588460C | Friction drum | |
DE584027C | Inclined seat valve | |
DE580427C | Inclined seat valve | |
DE554451C | Inclined seat valve | |
DE566342C | Inclined seat valve | |
DE570250C | Inclined seat valve with a circular passage cross-section in the seat | |
DE597797C | Inclined seat valve |