Ignoramus4694 fired this volley in
:

I would like to posit a hypothesis that I came up with yesterday,
which is that makers of equipment that is very long lasting,
themselves last longer. Some examples are Quincy compressor, McKay
equipment (maker of the pump), Champion compressor, etc.



And Santore & Sons, Inc (pyrotechnics) in business continually since 1898.

(Of which I am affiliated)G

LLoyd