Douglas Alan Popwell

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Ocoee, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
Safety plug
- Patent number 6,752,174
- Issue date Jun 22, 2004
- Paul Eric Kristofferson
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
SAFETY PLUG
- Publication number 20040065376
- Publication date Apr 8, 2004
- Paul Eric Kristofferson
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES