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| Number | Title | Issue Date |
| 5951229 | Battery charging and transfer system for electrically powered vehicles A battery transfer and charging system for electrically powered vehicles includes a conveyor loop for conveying batteries from a battery receiving station to a battery delivery station. A displacement assembly removes spent batteries of electric vehicles ... | 09/14/1999 |
| 5927938 | Battery charging and transfer system for electrically powered vehicles A battery transfer and charging system for electrically powered vehicles includes a conveyor loop for conveying batteries from a battery receiving station to a battery delivery station. A displacement assembly removes spent batteries of electric vehicles ... | 07/27/1999 |
| 5711648 | Battery charging and transfer system A battery transfer and charging system for electric vehicles includes a conveyor loop for conveying batteries from a battery receiving station to a battery delivery station. A displacement assembly removes spent batteries of electric vehicles by forcing c... | 01/27/1998 |
