Nelson Pass Patents

Possibly the best place to understand is reading how the inventor describes it.


For example:


http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.htm&r=6&p=1&f=G&l=50&d=PTXT&S1=(Pass+AND+Nelson).INNM.&OS=in/(Pass+and+Nelson)&RS=IN/(Pass+AND+Nelson)


A list of Nelson Pass patents:


http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.htm&r=0&p=1&f=S&l=50&Query=in%2F%28Pass+and+Nelson%29&d=PTXT


List found at the Wikipedia article for Nelson Pass


https://en.m.wikipedia.org/wiki/Nelson_Pass


Espacenet advanced search can also be used to find any patent