Complain all you want, if you publish or publicly display your creations without a copyright or patent application, it's fair game, right or wrong. If you think you can get credit or compensation, go ahead and try, but don't bet the farm. :|
Yes Sa... I can vouch for that also...course y'all know it ain't cheap ta acquire one...but some Co. do offer free kits ta get ya started on your "thang"... Inventionhome/MatchProduct.com ta name a few..