Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1995-01-09
1997-01-07
McElheny, Jr., Donald E.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
34082531, 360 60, 380 4, G06F 704, G11B 1504, G11B 1904, H04L 900
Patent
active
055926517
ABSTRACT:
A system for limiting the number of different video game machines on which a cartridge may be played so as to effectively inhibit the conduct of a cartridge rental business. Every machine has a serial number. Every cartridge records the serial number of any machine on which it is played, up to a maximum number (e.g., ten) of such serial numbers. A machine will not play an inserted cartridge if its serial number is not recorded in the cartridge and if there is no room left to record it.
REFERENCES:
patent: 4577289 (1986-03-01), Comerford et al.
patent: 4688169 (1987-08-01), Joshi
patent: 4799635 (1989-01-01), Nakagawa
patent: 4866769 (1989-09-01), Karp
patent: 5070479 (1991-12-01), Nakagawa
patent: 5155768 (1992-10-01), Matsuhara
McElheny Jr. Donald E.
Tkacs Stephen R.
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