ext_87506 ([identity profile] tahnan.livejournal.com) wrote in [personal profile] zotmeister 2005-12-20 11:37 pm (UTC)

For what it's worth, the US Trademark Office doesn't list "Cross Sums" as ever having been a trademark. (Compare "Double Crostic", which Janet Elliot trademarked in the mid 70s, though it is now dead.)
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