National Guardian Security Services Corp

Hello all, I am wondering if any of you have heard of or have any information about National Guardian Security Services Corp. They seem to be a more California and Nevada centered company. I’ve found little to nothing about them but am quite interested in the whereabouts of the company. I’ve found the following:

A logo trademark:

A patch:

A pull station:

A keypad on a movie prop website:

Some sort of panel:

A siren:

Another pull station:

And a bell box:

I’ve been able to find a few old business profiles but nothing else.

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I’ve seen at least one National Guardian-branded RMS-1T like that one (can’t remember where), but that’s about it.

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