There are few repeated patent numbers, but with different granted dates in the known references list. For example 4609325 9/1986 Gabrielli and 4609325 5/1995. Are they the same or is there any difference between them? 

3 Comments
James McArdleFeb 1, 2013
I'm looking into for you.
James McArdleFeb 1, 2013
*into this
Daniel PorterFeb 4, 2013
Srividya, thank you for pointing this out. There were some duplicate entries, and the date discrepancies were between the priority date and the publication date of the patents listed. I've now removed these duplicates.