northwest Another early PI patent
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australian electronic gold prospecting forum.com  |  Patents  |  Detector Patents  |  Topic: Another early PI patent 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: Another early PI patent  (Read 86 times)
bugwhiskers
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« on: April 05, 2011, 10:53:10 AM »
The attached patent (unless previously abandoned) expired two years ago. It uses both multi period and multi sampling.
The idea was to make an improved walk through detector but the patent was in no way limited to that application.
All these early patents are of interest when considered in light of the PI Pope's patents.  I eyed

regards
bugwhiskers
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Not using the detectors existing audio stream for the user adjustment interface is just plain "dumb"
Doug
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« Reply #1 on: April 05, 2011, 11:32:31 AM »
Quote from: bugwhiskers on April 05, 2011, 10:53:10 AM
The attached patent (unless previously abandoned) expired two years ago. It uses both multi period and multi sampling.
The idea was to make an improved walk through detector but the patent was in no way limited to that application.
All these early patents are of interest when considered in light of the PI Pope's patents.  I eyed

regards
bugwhiskers

Looks like a form of multi period sensing?
doug happy face
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« Reply #2 on: April 05, 2011, 12:48:11 PM »
Quote from: bugwhiskers on April 05, 2011, 10:53:10 AM
The attached patent (unless previously abandoned) expired two years ago. It uses both multi period and multi sampling.
The idea was to make an improved walk through detector but the patent was in no way limited to that application.
All these early patents are of interest when considered in light of the PI Pope's patents.  I eyed

regards
bugwhiskers

I wonder if the "patent parrot" sits on the shoulder of the PI pope?
doug
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"Let me be a free man....free to think and talk and act for myself."
Chief Joseph
"Don't ask 'Why'; ask instead, 'Why not."
John F. Kennedy
All posts on this forum express the personal views of the author and should not be interpreted as necessarily being in accord with those of the forum owner
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