Number | Name | Date | Kind |
---|---|---|---|
4053740 | Rosenthal | Oct 1977 | |
4089524 | Hauck | May 1978 | |
4357014 | Baer et al. | Nov 1982 | |
4862373 | Meng | Aug 1989 | |
4905147 | Logg | Feb 1990 | |
4905168 | McCarthy et al. | Feb 1990 | |
5047916 | Kondo | Sep 1991 | |
5058024 | Inselberg | Oct 1991 |
Entry |
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"Creating Arcade Games on the Commodore 64," 1984, Compute! Publications, Inc., Chapter 9: Collisions, p. 244, line 10, One of the ABC Publishing Companies, Greensboro, N.C., U.S.A. |