22 records — Page 3 of 3
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Creators:
Ehrat, Arthur
Fleckner, John A., 1941-
Dates:
2011
1865-2005
bulk 1970-1990
Size:
10 Cubic feet (26 boxes)
Collection ID:
NMAH.AC.0907
Repository:
Archives Center, National Museum of American History

Arthur Ehrat invented and patented a breakaway basketball rim, fashioning his prototypes from bolts, metal braces and one key part: a piece of the heavy-duty coil spring on a John Deere cultivator. His invention helped to revolutionize the way basketball is played because players could slam dunk the ball with fewer injuries and without bending the rims or breaking backboards. This collection includes correspondence, legal documents --such as patent papers, litigation files and licensing agreements --photographs and sketches that relate to the basketball invention, as well as materials regarding his two field spreader patents and other invention ideas.

Found In
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Creators:
Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
Dates:
circa 1847-1989
Size:
36 Cubic feet (124 boxes, 3 map-folders)
Collection ID:
NMAH.AC.0069
Repository:
Archives Center, National Museum of American History

Original documents and papers generated by William J. Hammer and by various companies and individuals with whom he was associated. Includes material related to the research and inventions of Edison, Bell, Tesla, the Curies, etc.

Found In
22 records — Page 3 of 3