Robert Bentley Chelf

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Kalispell, MT, US

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Patents Grantslast 30 patents

Information Patent Grant
Low voltage LED filament array lighting
- Patent number 12,140,277
- Issue date Nov 12, 2024
- Robert Bentley Chelf
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Low voltage LED filament array lighting
- Patent number 11,732,846
- Issue date Aug 22, 2023
- Robert Bentley Chelf
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Low voltage LED filament array lighting
- Patent number 10,859,215
- Issue date Dec 8, 2020
- Robert Bentley Chelf
- F21 - LIGHTING

Patents Applicationslast 30 patents

Information Patent Application
Low Voltage LED Filament Array Lighting
- Publication number 20230408047
- Publication date Dec 21, 2023
- Robert Bentley Chelf
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Low Voltage LED Filament Array Lighting
- Publication number 20210080066
- Publication date Mar 18, 2021
- Robert Bentley Chelf
- F21 - LIGHTING
Information Patent Application
Low Voltage LED Filament Array Lighting
- Publication number 20180252371
- Publication date Sep 6, 2018
- Robert Bentley Chelf
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR