ROBERT L KAHN has a total of 12 patent applications. Its first patent ever was published in 1931. It filed its patents most often in United States and Canada. Its main competitors in its focus markets electrical machinery and energy, machines and audio-visual technology are WEINBERG MARTIN, SELBACH DIRK and A T T ADVANCED TRANSFORMER TEC.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 11 | |
#2 | Canada | 1 |
# | Industry | |
---|---|---|
#1 | Electrical machinery and energy | |
#2 | Machines | |
#3 | Audio-visual technology | |
#4 | Telecommunications | |
#5 | Measurement | |
#6 | Surface technology and coating | |
#7 | Packaging and shipping | |
#8 | Machine tools |
# | Name | Total Patents |
---|---|---|
#1 | Bussey William H | 5 |
#2 | Goodwin Smith George | 1 |
#3 | Glukes Bernard R | 1 |
#4 | Bussey William Henry | 1 |
#5 | Harry Schagrin | 1 |
#6 | Weir Robert E | 1 |
#7 | Sherman Rubenstein | 1 |
#8 | Joseph Razek | 1 |
Publication | Filing date | Title |
---|---|---|
US3373043A | Method of packaging coffee and package | |
US2447796A | Grid structure for electron discharge tubes | |
US2535232A | Electrical apparatus | |
US2450170A | Fitting | |
US2470975A | Electrical apparatus | |
US2436742A | Line cord transformer | |
US2436741A | Vacuum tube voltmeter | |
US2439072A | Amplifying coupling between a low resistance source and a high resistance circuit | |
US2300447A | Animated sign | |
US2255141A | Arc welder | |
US1995192A | Cleaning iron or steel | |
CA464385A | Electric apparatus |