$118,000. Average Physical Therapist salaries for job postings in San Francisco Bay Area, CA are 33% higher than average Physical Therapist salaries for job postings nationwide.118,000. Average Physical Therapist salaries for job postings in San Francisco Bay Area, CA are 33% higher than average Physical Therapist salaries for job postings nationwide.
It was over 1500 years later in 1790, that the first workable sewing machine was invented and patented by the British inventor Thomas Saint. Earlier, in 1755, Karl Weisenthal, a German inventor, devised the first sewing machine needle, but did not produce a complete machine.
It was in 1846 that Elias Howe got the first American patent for a sewing machine that had one pointed eye and accepted thread from two sources. The mass production of machines started in 1850 when Isaac Singer invented the machine that was commercially successful.