July is one of America’s most historically rich months. Independence Day on July 4th anchors the celebration, but the entire month is packed with landmark moments in science, medicine, and technology. From the first U.S. patent to the moon landing, July has been a catalyst for world-changing innovation.
Here are 10 inventions, patents, and milestones that occurred in July and helped shape modern life.
1. Air Conditioning (July 1902)
In 1902, engineer Willis Carrier invented the first modern air conditioner in Brooklyn, New York, while troubleshooting a humidity problem at a printing plant. His solution transformed how humans live, work, and build cities in hot climates.
2. In Vitro Fertilization (IVF) — July 25, 1978
On July 25, 1978, Louise Brown became the first person born through In Vitro Fertilization (IVF), a process in which an egg is fertilized by sperm outside the body. Today, IVF is the most widely used form of assisted reproductive technology, with millions of births attributed to the technique worldwide.
Today, Brown is an IVF ambassador and keynote speaker.
3. The First U.S. Patent — July 31, 1790
The United States Patent and Trademark Office issued its very first patent on July 31, 1790, to Samuel Hopkins for a method of producing potash, a compound used in fertilizer. That single document (which was signed by President George Washington!) launched one of the most influential intellectual property systems in history.
The Patent Office was officially established over a decade later in 1802 and it wasn’t until July 13, 1836, that the first official U.S. Patent No. 1 was granted to Senator John Ruggles. It was for a traction wheel for steam locomotives.
Of course, it wasn’t the first actual patent and the nearly 10,000 patents granted before the numbering system as referred to as the X-patents.
4. The Graham Cracker — July 5, 1794
Presbyterian minister Sylvester Graham invented the graham cracker on July 5, 1794. Originally conceived as a health food, it’s now a beloved American staple and an essential ingredient in s’mores every Fourth of July.
5. NASA — Founded July 29, 1958
The National Aeronautics and Space Administration was established on July 29, 1958. Eleven years later, on July 20, 1969, NASA’s Apollo 11 mission landed on the moon and Neil Armstrong became the first human to walk on its surface.
6. The Rotary Printing Press — Patented July 24, 1847
Richard Hoe patented the rotary printing press on July 24, 1847, revolutionizing mass communication by dramatically increasing the speed at which newspapers and books could be printed.
7. The ZIP Code — July 1, 1963
The ZIP Code system launched on July 1, 1963, as part of a national effort to speed up mail delivery across a growing country. It remains a foundational part of American logistics and addressing infrastructure.
8. The Cardiac Pacemaker — Patent Filed July 22, 1960
A patent for the implantable cardiac pacemaker was filed on July 22, 1960, and granted on October 9, 1962. The device has since saved and extended millions of lives by regulating abnormal heart rhythms.
9. Oral Penicillin — Patented July 24, 1956
On July 24, 1956, a patent was granted for an oral form of penicillin, making one of medicine’s most important antibiotics accessible in pill form for the first time.
10. Insulin — Isolated July 27, 1921
On July 27, 1921, Canadian surgeon Frederick Banting and University of Toronto medical student Charles Best isolated insulin for the first time. Their discovery transformed Type 1 diabetes from a fatal diagnosis into a manageable condition.
Inventions That Changed How We Celebrate the Fourth of July
The tools and traditions of Independence Day didn’t appear out of nowhere. Here are five inventions that shaped the way Americans celebrate July 4th:
- Sparklers — The modern sparkler patent was granted on August 12, 1936, cementing its place as a Fourth of July staple.
- The Charcoal Grill — In the 1950s, George Stephen invented the first covered charcoal grill, transforming backyard cookouts into an American tradition.
- Fireworks — Originating in China roughly 2,000 years ago, fireworks reached Europe in the 13th century and became central to American Independence Day celebrations from the very beginning.
- Anti-Anxiety Shirts for Pets — For dogs frightened by fireworks, the Thundershirt offers relief. Its patent was filed in 2012 and granted in 2016.
- The Portable Cooler — Richard Laramy filed to patent the portable ice chest on February 24, 1951; it was granted December 22, 1953.