Multi-head floor-grinding machine with pivoting heads
The dashed lines showing the drive heads in
Claims
The ornamental design for a multi-head floor-grinding machine with pivoting heads, as shown and described.
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Type: Grant
Filed: May 19, 2010
Date of Patent: Jun 26, 2012
Inventor: Howard Goentzel (Palmer, AK)
Primary Examiner: Mark Goodwin
Attorney: Michael J. Tavella
Application Number: 29/349,917