Re-inventing the lightbulb

[Pat Pending]

I think that a lot of "inventors" through history knew that their ideas were valid and perhaps could demonstrate them in principal but had to "guild" their results to get the recognition/attention/finance they sought, on the subject of filament lamps when Edison was demonstrating his early versions, he went to great lengths to hide the fact that they only lasted a few minutes at best and if any longer would become so blackened as to be useless. If Lilienfield had pursued his invention with the same showmanship maybe the thermionic valve would have become obsolete decades sooner

Regards. Andy.