David C. Douglas

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Palo Alto, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Fire-protection mechanism
- Patent number 9,381,387
- Issue date Jul 5, 2016
- David C. Douglas
- A62 - LIFE-SAVING FIRE-FIGHTING

Patents Applicationslast 30 patents

Information Patent Application
Fire-protection mechanism
- Publication number 20150068776
- Publication date Mar 12, 2015
- David C. Douglas
- A62 - LIFE-SAVING FIRE-FIGHTING