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Patent number 2,474,140. Page 2.

img793.jpg The Foote Burt Drilling Machine CompanyThumbnailsPatent number 2,474,140.  Sheet 2The Foote Burt Drilling Machine CompanyThumbnailsPatent number 2,474,140.  Sheet 2The Foote Burt Drilling Machine CompanyThumbnailsPatent number 2,474,140.  Sheet 2The Foote Burt Drilling Machine CompanyThumbnailsPatent number 2,474,140.  Sheet 2