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Discrimination patent issue
Posted by: juit
Date: September 16, 2017 09:08PM
Some one wrote something about when discrimination was discovered and the idea was stolen from an old folk, anyone has the story? Can some one send me a pm with it please in case the ifo is too blunt



Whites MXT Pro & IDX
Makro kruzer
Fisher CZ6
Minelab Etrac

Re: Discrimination patent issue
Posted by: Dave J.
Date: September 16, 2017 11:41PM
The VLF induction balance discriminator was invented in the late 1800's as a benchtop unit for distinguishing counterfeit coins from real ones. It relied on electromechanical principles since the vacuum tube didn't exist yet. I've read the patent and have a copy of it buried in my files somewhere, but but sorry, don't have the patent number.

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Re: Discrimination patent issue
Posted by: juit
Date: September 16, 2017 11:52PM
Here some one told other story but i cant find it, i thonk the guy passed away, it was about 2 friends that metal detect and one of them aplied to his metal detectors when thre was no discrimination at that era



Whites MXT Pro & IDX
Makro kruzer
Fisher CZ6
Minelab Etrac

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Re: Discrimination patent issue
Posted by: vlad
Date: September 17, 2017 12:13AM
You know that soft drink and candy machines have a magnet in them to distinguish steel slugs?

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