Derek C. Keith

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Portland, TN, US

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Patents Grantslast 30 patents

Information Patent Grant
Oil sight glass
- Patent number 10,451,466
- Issue date Oct 22, 2019
- Des-Case Corporation
- Jay Michael Cooper
- G01 - MEASURING TESTING
Information Patent Grant
Dual-mount oil sight glass
- Patent number D834976
- Issue date Dec 4, 2018
- Des-Case Corporation
- Jay Michael Cooper
- D10 - Measuring, testing, or signalling instruments

Patents Applicationslast 30 patents

Information Patent Application
Oil Sight Glass
- Publication number 20210239505
- Publication date Aug 5, 2021
- DES-CASE CORPORATION
- Jay Michael Cooper
- G01 - MEASURING TESTING
Information Patent Application
Oil Sight Glass
- Publication number 20200109983
- Publication date Apr 9, 2020
- DES-CASE CORPORATION
- Jay Michael Cooper
- G01 - MEASURING TESTING
Information Patent Application
Oil Sight Glass
- Publication number 20180073907
- Publication date Mar 15, 2018
- DES-CASE CORPORATION
- Jay Michael Cooper
- G01 - MEASURING TESTING