Inventor
MARKS HOWARD MITCHELL
US10 patents
⚠️ This page may combine multiple inventors who share the name “MARKS HOWARD MITCHELL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PTT LLC
7 patentsUS7789750B2Sep 7, 2010
Method of playing a slot machine game with matching symbol combinations
PTT LLC20 citations92
US7749072B1Jul 6, 2010
Method of providing free games on a slot machine device
PTT LLC30 citations92
US7722457B1May 25, 2010
Method of playing a slot machine (“cumulative numeric awards”)
PTT LLC35 citations92
US7887407B1Feb 15, 2011
Method of extending play of a slot machine game
PTT LLC21 citations91
US7980946B2Jul 19, 2011
Method of playing a slot machine game using wildcard symbols with randomly displayed multiplier values
PTT LLC6 citations73
US7789753B2Sep 7, 2010
Method of playing a slot machine game with awards based upon an order of symbol placement into a symbol matrix
PTT LLC5 citations62
US7837553B2Nov 23, 2010
Method of play of a slot machine game with sequential eligibility for a bonus event
PTT LLC0 citations41