Who were the patents assigned to? All rights might have been assigned to a company he might have worked for, in which case he probably didn't collect a dime. But if he owns them, and he could work a licensing arrangement with a big enough company (though they'd probably try to invent around rather than license), then maybe he made some $.
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Who were the patents assigned to? All rights might have been assigned to a company he might have worked for, in which case he probably didn't collect a dime. But if he owns them, and he could work a licensing arrangement with a big enough company (though they'd probably try to invent around rather than license), then maybe he made some $.