1842 1st known sewing machine patented in US, John Greenough, Washington, D.C.
1878 World’s 1st telephone directory issued, 50 subscribers (New Harbor, Connecticut)
1887 1st US bacteriology laboratory opens (Brooklyn)
1782 Engineer James Watt’s patent for a rotary motion for the steam engine (his sun-and-planet gear) is granted
1893 Rudolf Diesel obtains a patent for his internal combustion engine, later known as the diesel engine
1850 Original Washington’s Farewell Address manuscript sells for $2,300
1877 1st news dispatch by telephone, between Boston & Salem, Massachusetts
1879 1st artificial ice rink in North America (Madison Square Garden, NYC)
1842 1st adhesive postage stamps in US (private delivery company), NYC
1903 1st Teddy Bear introduced in America, made by Morris & Rose Michtom
1926 Contract air mail service begins in US
1909 1st subway car with side doors goes into service (NYC)
1932 1st patent for a tree issued to James Markham for a peach tree
1946 1st commercially designed helicopter tested, Bridgeport, Connecticut
1842 1st known sewing machine patented in US, John Greenough, Washington, D.C.
1878 World’s 1st telephone directory issued, 50 subscribers (New Harbor, Connecticut)
1887 1st US bacteriology laboratory opens (Brooklyn)
