

Grumman designed the first practical floats with a retractable landing gear for the Navy, and this launched Grumman into the aviation market. While maintaining the business by welding aluminum tubing for truck frames, the company eagerly pursued contracts with the US Navy.

The company registered as a business on December 6, 1929, and officially opened on January 2, 1930. factory in Baldwin on Long Island, New York.

Leroy Grumman worked for the Loening Aircraft Engineering Corporation beginning in 1920, and when it was bought by Keystone Aircraft Corporation and the operations were moved from New York City to Bristol, Pennsylvania, in 1929, Grumman and his partners, all ex-Leoning Aircraft employees, ( Edmund Ward Poor, William Schwendler, Jake Swirbul, and Clint Towl) started their own company in an old Cox-Klemin Aircraft Co.
