I was wondering because I recently happened across a IC-735 for sale in Roseburg, Oregon:http://roseburg.craigslist.org/ele/4395373265.html
You'll notice that it has the modernized Icom logo and labeling font. The 735 I have has an older Icom logo, an ellipse with a large vertical bar through the middle, and an older labeling font. I know that the 735 was made between 1985 and 1994. I also know that most manuals for it that you'll find online have the older logo. I was curious as to when Icom updated their logo and styling.