| 摘要 |
<p>SAFETY SPIKE A safety spike device for retaining paper or other frangible material is discussed. The device has been developed to allow for persons to safely spike and retain paper or other frangible material. The spike has a downward facing spike tip and is able to move up and down relative to the base which is generally positioned on a table, counter or other flat surface. Fig. la Fig. lb Fig. 1c Fig. 1d</p> |
