Re: The lightbulb conspiracy
It appears that the goal in the early part of the 20th Century was to produce a lamp life that was as long as possible often at the expense of actual light output.
Later a compromise was agreed upon giving the best possible light output combined with a long life. Maybe not a Cartel as such, just a sort of standard suggested guarantee of efficiency.
A lot of technology and care for a few pennies. John.
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