CONTEST
CompetedStump Grinder
Prior Art Search
Prize
$5,000
$5,000
DEADLINE
This contest is closed.
This contest is closed.
Patent Known References
Type | Patent Country | Patent Number |
---|---|---|
Patent | US | 3870161 |
Patent | US | 4036321 |
Patent | US | 4271879 |
Patent | US | 5638619 |
Patent | US | 6026871 |
Patent | US | 6047749 |
Patent | US | 6343237 |
Patent | US | 6499238 |
Patent | US | 7032333 |
Patent | US | 7334658 |
Patent | US | 7401542 |
Patent | US | 3336958 |
Patent | US | 4041996 |
Patent | JP | S6230307 |
Patent | US | 5158126 |
Patent | US | 5794673 |
Patent | US | 6435234 |
Patent | US | 20050036876 |
Patent | US | 6438874 |
Patent | DE | 10127125 |
Patent | US | 20020195869 |
Patent | US | 7398805 |
Patent | US | 7431059 |
Patent | US | 20070051427 |
Patent | US | 10039239 |
Patent | US | 20090036271 |
Published Known References
Type | Title of NPL |
---|---|
Other | Volvo excavator EC180C |
Other | Takeuchi excavator TB235 |
Other | Kubota U48-4 compact excavator |
Other | Seppi Kastor hyd attachment https://www.youtube.com/watch?v=3g7jTe9mazQ&ab_channel=SEPPIMulcher |
Other | Stumper 220 attachment |
Other | "Rayco “crawlers” (models C80 |
Other | Rayco RG1645 |