If you examine the history, you will see that virtually all of the recent edits are either by "PlanBGuy", or by an IP address belonging to an AT&T DSL customer in Los Angeles. Which is practically guaranteed to be him. He even created the article originally, in 2007.
He last edited it on 27 April, three weeks ago.
Please note this recent addition, made on Christmas Day 2013:
So, did he really invent the buffered mult?Design innovations credited by Grenader are the introduction of buffered multiples, the motion sensing dual axis joystick controller, a programmable tap clock and the first manufacture to include variable potentiometer control within a 2cm wide module: the ELF series.
This editing is against Wikipedia policy, of course. Specifically WP:NPOV, WP:COI, and possibly WP:OWN, if he starts fighting with others over it.
He's also doing a bad job of referencing it. No inline refs, no tags. That is also against policy.
Yes, it's already been reported, no action was taken. Yet.