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- The American patent office.
- Patent history project.
- Patent history project.
- Patent history project.
- Patent history project.
- Patent history project.
- AMOS W. WOODWARD'S FIRST PATENT FROM 1870.
- DIESEL ENGINE ENGINEERING HISTORY.
- DIESEL ENGINE ENGINEERING HISTORY.
- Circa 1935.
- CONTENTS
- CONTENTS PAGE 2.
- PREFACE
- PREFACE PAGE 2.
- SPEED GOVERNOR HISTORY