Ronald L. Sitzema Jr.

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Ellsworth, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Adjustable exterior light
- Patent number D333008
- Issue date Feb 2, 1993
- Siemens Solar Industries, L.P.
- John S. Frost
- D26 - Lighting
Information Patent Grant
Solar powered light with motion sensor
- Patent number D332669
- Issue date Jan 19, 1993
- Siemens Solar Industries, L.P.
- John S. Frost
- D26 - Lighting