I am not familiar with the company. However, I do investigate things so: Looks like Jackman Co is not available anymore. The place is a hair salon now and I cannot find anything more on it but it might be one of the first wig-wag systems in existence. The person that this address was registered to also has been an inventor of specialized bullet molds too from around 1973. Seems like he was also an amateur radio operator too and he should be getting up in age.
That might spark something else for you. Good luck.
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