LEWIS DAVID J has a total of 11 patent applications. Its first patent ever was published in 1959. It filed its patents most often in United Kingdom, United States and Canada. Its main competitors in its focus markets machine tools, telecommunications and machines are OBERHEIM STEPHEN C, REX CAMERON LUCAS and WESSELMANN BRUNO.
# | Country | Total Patents | |
---|---|---|---|
#1 | United Kingdom | 7 | |
#2 | United States | 3 | |
#3 | Canada | 1 |
# | Industry | |
---|---|---|
#1 | Machine tools | |
#2 | Telecommunications | |
#3 | Machines |
# | Technology | |
---|---|---|
#1 | Sawing | |
#2 | Unspecified technologies | |
#3 | Wood saws | |
#4 | Waveguides |
# | Name | Total Patents |
---|---|---|
#1 | Lewis David J | 4 |
#2 | Inkster Kevin R | 2 |
Publication | Filing date | Title |
---|---|---|
GB9710722D0 | Vehicle security device | |
GB9622885D0 | Security device for preventing the scaling of walls or fences | |
GB9405283D0 | Retractable security bars | |
GB9405284D0 | Internal combustion rotary engine | |
GB9317454D0 | Vehicle immobilising device | |
GB9311844D0 | Internal combustion rotary engine | |
CA1322319C | Portable saw mill | |
US3230481A | Method for segregating harmonic power in a waveguide system | |
US3078423A | Apparatus for segregating harmonic power in a waveguide system |