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...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.

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Class D13/164 - Linear array of three or more identical control or display elements


Subclass of Class D13 - Equipment for production, distribution, or transformation of energy
No. of patents: 228
Last issue date: 04/17/2012


1            
NumberTitleIssue Date
D657753Control interface
04/17/2012
D657319Wall mounted button panel with split buttons
04/10/2012
D654030Switch
02/14/2012
D653627Switch
02/07/2012
D653626Field device
02/07/2012
D653220Wall mounted button panel with split buttons
01/31/2012
D652806Wall mounted button panel with split buttons
01/24/2012
D652805Wall mounted button panel with split buttons
01/24/2012
D651985Wall mounted button panel with split buttons
01/10/2012
D651986Wall mounted button panel with split buttons
01/10/2012
D651983Wall mounted button panel
01/10/2012
D651984Wall mounted button panel
01/10/2012
D651575Wall mounted button panel
01/03/2012
D651574Wall mounted button panel
01/03/2012
D651577Wall mounted button panel with split buttons
01/03/2012
D651572Wall mounted button panel
01/03/2012
D651571Wall mounted button panel
01/03/2012
D651576Wall mounted button panel
01/03/2012
D651579Wall mounted button panel
01/03/2012
D651578Wall mounted button panel
01/03/2012
D651573Wall mounted button panel
01/03/2012
D651580Wall mounted button panel with split buttons
01/03/2012
D649123Load control device
11/22/2011
D643377Dual horizontal control panel
08/16/2011
D642992Controller for power conditioner for solar energy generation system
08/09/2011
D642541Cover plate for electrical devices
08/02/2011
D642542Control panel for a construction machine
08/02/2011
D642134Control device
07/26/2011
D642133Control panel for a construction machine
07/26/2011
D642135Dual vertical control panel
07/26/2011
D641712Control panel for a construction machine
07/19/2011
D637163Power supply for tattoo machine
05/03/2011
D636738Wall mounted button panel with split buttons
04/26/2011
D636351Wall switch
04/19/2011
D636350Wall switch
04/19/2011
D636352Wall switch
04/19/2011
D633874Wall mounted panel with iconic buttons
03/08/2011
D632262Circular remote control with display
02/08/2011
D621793Test switch with improved marking
08/17/2010
D621794Controller
08/17/2010
1            
 
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