Inventor
BOCKMAN MATTHEW D
US4 patents
Patents
4 patentsUS11280934B2Mar 22, 2022
Electromagnetic marker devices for buried or hidden use
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US11686878B1Jun 27, 2023
Electromagnetic marker devices for buried or hidden use
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US11467317B2Oct 11, 2022
Electromagnetic marker devices with separate receive and transmit antenna elements
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US12210130B1Jan 28, 2025
Electromagnetic marker devices for buried or hidden use
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