David Philip Henrich

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Loretto, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Spool-type pitless adapter for groundwater heat exchanger
- Patent number 12,305,467
- Issue date May 20, 2025
- Darcy Solutions, Inc.
- Jimmy Bryan Randolph
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
SPOOL-TYPE PITLESS ADAPTER FOR GROUNDWATER HEAT EXCHANGER
- Publication number 20230399915
- Publication date Dec 14, 2023
- Darcy Solutions, Inc.
- Jimmy Bryan Randolph
- E21 - EARTH DRILLING MINING