"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 6336683 | Fixed platform self-propelled trailer dump The present invention provides a self-propelled trailer dump truck which can convey earth and sand at an amount substantially corresponding to two dump trucks by one conveying operation without overloading, whereby excellent effects can be obtained on an ... | 01/08/2002 |