Electricity: electrical systems and devices – Control circuits for electromagnetic devices – For relays or solenoids
Patent
1976-10-12
1978-05-23
Goldberg, Gerald
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
For relays or solenoids
194 15, 3403093, 3403094, 340162, H01H 4700
Patent
active
040914372
ABSTRACT:
Apparatus is disclosed which automatically times non-play time for coin operated amusement devices and provides a predetermined period when the device may be actuated to provide a free play.
REFERENCES:
patent: 3147346 (1964-09-01), Herman
patent: 3202255 (1965-08-01), Kenney et al.
patent: 3266610 (1966-08-01), Stahl
patent: 3988727 (1976-10-01), Scott
Goldberg Gerald
Shields H. Gordon
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