IP Library › Granted Patent US 4,244,574
Granted Patent Utility
US 4,244,574 · App. 06/025,123

Pinball machine with conical playfield

Inventors: Ronald E. Milner, Nolan K. Bushnell
Patented Case View Patent ↗
Granted: Jan 13, 1981 Filed: Mar 29, 1979
Inventors
Ronald E. Milner
Nolan K. Bushnell
Assignee (at issue)
Atari Corporation

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Quick Facts
Patent No.
US 4,244,574
App. No.
06/025,123
Filed
1979-03-29
Granted
1981-01-13
Kind
A