On August 12, 1851, Isaac M. Singer was granted a patent for the first practical and efficient sewing machine. His sewing machine was revolutionary, having a double treadle.
Elias Howe had patented the sewing machine before Singer. So Singer paid huge settlements to Howe. However, Singer used smart business innovations like installment buying, after-sale servicing and trade-in allowances, to take a leading position the marketplace.
This patent led to the first major patent war. Watch this video:
Publication number: US8294 A
Patent Title: Improvement in sewing-machines
Publication type: Grant
Publication date: Aug 12, 1851
Inventors: Isaac M. Singeb