Home / Vintage machine shop manufacturing history projects over the years. 19
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- The Roper Company.
- The Roper Company.
- Patent number 2,931,177. Page 4.
- Patent number 2,931,177. Page 3.
- Patent number 2,931,177. Page 2.
- Patent number 2,931,177. Page 1.
- Patent number 2,931,177. 2 sheets-sheet 1.
- The Sundstrand Machine Tool Company patent number 2,931,177.
- Patent number 2,931,177. Sheet 2 of 2.
- Patent number 2,803,112. Page 6.
- Patent number 2,803,112. Page 5.
- Patent number 2,803,112. Page 4.
- Patent number 2,803,112. Page 3.
- Patent number 2,803,112. Page 2.
- Patent number 2,803,112. Page 1.