Darrell Nelson

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Calgary, CA

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Patents Grantslast 30 patents

Information Patent Grant
Valve with expandable sleeve fitted over perforated walls of inlet...
- Patent number 11,156,299
- Issue date Oct 26, 2021
- Sur-Flo Meters & Controls Ltd
- Darrell Nelson
- G05 - CONTROLLING REGULATING
Information Patent Grant
Paddlewheel flow meter with improved servicability and improved rel...
- Patent number 9,086,305
- Issue date Jul 21, 2015
- Sur-Flo Meters & Controls Ltd.
- Darrell Nelson
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Improved Metering Systems & Methods
- Publication number 20240302195
- Publication date Sep 12, 2024
- SUR-TECH INSTRUMENTS LTD.
- Steve Crawshaw
- G01 - MEASURING TESTING
Information Patent Application
Valve with Expandable Sleeve Fitted Over Perforated Walls of Inlet...
- Publication number 20200386339
- Publication date Dec 10, 2020
- Sur-Flo Meters & Controls Ltd
- Darrell Nelson
- G05 - CONTROLLING REGULATING
Information Patent Application
Valve with Expandable Sleeve Fitted Over Perforated Walls of Inlet...
- Publication number 20190145538
- Publication date May 16, 2019
- Sur-Flo Meters & Controls Ltd
- Darrell Nelson
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Paddlewheel Flow Meter with Improved Servicability and Improved Rel...
- Publication number 20140326075
- Publication date Nov 6, 2014
- Darrell Nelson
- G01 - MEASURING TESTING