Retired Charles Koester Posted by Who's Who Site Administrator on January 19, 2019 Most Recent Title: Retired Physicist Company: Am. Optical Industry: Retired Years in Industry: 64 Years affiliated with Marquis Who’s Who: 16 Contact Charles Koester: Name(required) Email(required) Website Comment(required) Submit Δ Share this:TwitterFacebookLinkedInLike this:Like Loading...