| 摘要 |
<p>PESTOOR-1 APPLICATION FOR LETTERS PATENT for A TUBE ASSEMBLING DEVICE The invention relates to a device for coupling or plagging square tubes, which comprises a hollow base member having a hollow coupling member projecting therefrom and, if desired. one or more other coupling members projecting from the base member. The other coupling members have axial partitions in the mid portions thereof, at least the mid-portion of which is thick enough to receive a sheet metal screw and, if desired, there is provided a plug for the hollow coupling member for receiving a sheet metal screw. INVENTOR: James J. Pestoor 2901 Olney Street Kalamazoo, Michigan 49007</p> |
