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Patent number 3,520,201. 2 sheets-sheet 1.

Patent number 3,520,201. 2 sheets-sheet 1..jpg George E. Parker patent number 3,520,201. Page 2.ThumbnailsPatent number 3,520,201. 2 sheets-sheet 2.George E. Parker patent number 3,520,201. Page 2.ThumbnailsPatent number 3,520,201. 2 sheets-sheet 2.George E. Parker patent number 3,520,201. Page 2.ThumbnailsPatent number 3,520,201. 2 sheets-sheet 2.George E. Parker patent number 3,520,201. Page 2.ThumbnailsPatent number 3,520,201. 2 sheets-sheet 2.