U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

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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 D12/209 - Aperture or simulated aperture (39)


Subclass of Class D12 - Transportation
No. of patents: 914
Last issue date: 05/21/2013


          6            
NumberTitleIssue Date
D641678Wheel or wheel cover
07/19/2011
D639714Wheel or wheel cover
06/14/2011
D639715Wheel
06/14/2011
D639223Automotive wheel
06/07/2011
D639222Automotive wheel
06/07/2011
D639221Automotive wheel
06/07/2011
D639220Front face of a vehicle wheel
06/07/2011
D638762Wheel or wheel cover
05/31/2011
D638763Wheel
05/31/2011
D638764Wheel
05/31/2011
D638339Front face of vehicle wheel
05/24/2011
D638340Wheel for motor vehicle
05/24/2011
D637542Wheel rim assembly
05/10/2011
D636715Wheel or wheel cover
04/26/2011
D635904Wheel or wheel cover
04/12/2011
D635903Front face of a vehicle wheel
04/12/2011
D635079Car wheel
03/29/2011
D635078Wheel or wheel cover
03/29/2011
D635077Wheel or wheel cover
03/29/2011
D635076Wheel or wheel cover
03/29/2011
D635080Car wheel
03/29/2011
D634688Wheel for motor vehicle
03/22/2011
D634250Wheel
03/15/2011
D633843Wheel
03/08/2011
D633842Wheel
03/08/2011
D633841Automotive wheel
03/08/2011
D633844Wheel
03/08/2011
D633840Automotive wheel
03/08/2011
D633845Wheel
03/08/2011
D633025Wheel
02/22/2011
D631812Wheel or wheel cover
02/01/2011
D631814Wheel or wheel cover
02/01/2011
D631813Wheel or wheel cover
02/01/2011
D631419Automotive wheel
01/25/2011
D630990Front face of vehicle wheel
01/18/2011
D630565Wheel center
01/11/2011
D630564Wheel or wheel cover
01/11/2011
D630566Wheel
01/11/2011
D630145Wheel with 5 curved split spokes
01/04/2011
D630144Wheel
01/04/2011
          6            
 
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