1. The first-ever U.S. patent was granted in Delaware on July 30th, 1790. Samuel Hopkins received a patent for a process of making potash, an essential ingredient in fertilizer and soap.

2. On July 30th, 1969, Vice President Spiro Agnew spoke in Dover, Delaware, to urge Americans to support the Vietnam War effort. His speech sparked protests and counter-protests in the city.

3. Delaware's first African-American legislator, Charles Hebner, was born on July 30th, 1837. Hebner served in the Delaware House of Representatives from 1889 to 1890.

4. On July 30th, 1901, the DuPont Company, with headquarters in Wilmington, Delaware, introduced a new smokeless gunpowder that transformed the ammunition industry.

5. Delaware native and former Vice President Joe Biden celebrated his 70th birthday on July 30th, 2012. Biden was born in Scranton, Pennsylvania but grew up in Wilmington, Delaware.