The hand crank technology patent done by Se Kit Yuen:
http://www.google.com/patents?hl=en&lr=&vid=USPATD529212&id=qtd8AAAAEBAJ&oi=fnd&dq=hand+crank+flashlights&printsec=abstract#v=onepage&q=hand%20crank%20flashlights&f=false
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.