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| Number | Title | Issue Date |
| 5989422 | Oil skimmer apparatus An oil skimmer of the endless belt type which is transportable as a unit is disclosed. The unit has an adjustment for adjusting the location of the axis of head pulley rotation and a floating tail pulley to assure accurate tracking of the belts on the pul... | 11/23/1999 |
| 5108349 | Belt driving mechanism for game machines The present invention comprises an endless belt which is provided with perforations at the edge on the opposite sides at a regular interval, a pair of belt pulleys around which said endless belt is suspended, a sprocket wheel which is disposed substantial... | 04/28/1992 |
