INGENIOUS DEVICES LTD has a total of 11 patent applications. Its first patent ever was published in 1970. It filed its patents most often in Canada, United States and Australia. Its main competitors in its focus markets machine tools, machines and engines, pumps and turbines are WINSLOW PRODUCT ENGINEERING CO, MIDWEST SUPPLY AND MFG COMPANY and MICRO OPTICS DESIGN CORP.
# | Country | Total Patents | |
---|---|---|---|
#1 | Canada | 4 | |
#2 | United States | 2 | |
#3 | Australia | 1 | |
#4 | Germany | 1 | |
#5 | Denmark | 1 | |
#6 | United Kingdom | 1 | |
#7 | Italy | 1 |
# | Industry | |
---|---|---|
#1 | Machine tools | |
#2 | Machines | |
#3 | Engines, pumps and turbines |
# | Name | Total Patents |
---|---|---|
#1 | Parnham Ray G | 4 |
#2 | Willemsen Bernardus A | 4 |
#3 | Parry John | 3 |
#4 | Willemsen B A | 2 |
#5 | Parnham R G | 2 |
#6 | Parry J | 1 |
Publication | Filing date | Title |
---|---|---|
IT8025866D0 | Centre-less grinder for valves | |
DE3041722A1 | Centre-less grinder for valves - has parallel base rollers with control roller moved vertically with variable axis | |
DK460280A | Appliances for grinding valves | |
US4428160A | Centerless valve grinding | |
CA1114171A | Centreless valve grinding | |
CA951547A | Apparatus for providing oil grooves in valve guides | |
US3700343A | Apparatus for providing oil grooves in valve guides | |
CA947059A | Apparatus for providing oil grooves in valve guides | |
CA937030A | Device for replacing and regrinding valve seats |