Yep. He was also employed by Edison for years after that.
BTW, Latimer, the son of a former slave, proves that one generation is enough for anyone who isn’t content to just keep doing what people have been doing.
People who kept on doing the same thing, if white or black, kept getting the same results year after year ... which is why the percentage of poorly educated dirt farmers to escape poverty remains low if white or black. But for those driven to step out and who wouldn’t be stopped even the real oppression of the past couldn’t keep them from getting ahead, or even getting rich.
This, I reason, is why Booker Washington apparently felt a particular distaste for blacks who made their living agitating over injustice ... for such people depend for their pay on folks doing exactly the same things that have failed them time and again so that they can call the consequences stuff like systemic racism.
Son of an escaped slave, joined the Navy at 15, and holds multiple patents. Clearly a really smart guy who deserves respect, but is being politicized, and didn't invent the lightbulb.