Lewis Latimer, the black inventor Biden’s presumably referring to, is credited with creating an improved filament — as well as successfully testifying that Edison’s patents on the first practical lightbulbs were correctly granted. https://twitter.com/tomselliott/status/1301611527913472001

BTW I’ve been reading about Latimer for an hour. He’s super impressive (parents were freed from slavery in a crazy runaway/high-profile legal battle where abolitionists ultimately bought their freedom; Lewis lied to get into the Navy at 16, then was soon helping Graham Bell ...

patent his phone; he wrote the first book on incandescent light bulbs, and made other scientific contributions. Point being, you can celebrate people like Latimer without making up bizarre nonsense meant to undercut the “white guy” Edison.