David M. DeChristofaro

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Niles, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Tread for steel-pan stairways
- Patent number 9,593,489
- Issue date Mar 14, 2017
- Progressive Safety Solutions, LLC
- David M. DeChristofaro
- E04 - BUILDING

Patents Applicationslast 30 patents

Information Patent Application
Tread for Steel-Pan Stairways
- Publication number 20160326747
- Publication date Nov 10, 2016
- Progressive Safety Solutions, LLC
- David M. DeChristofaro
- E04 - BUILDING