Inventor

ZERFAHS ARTHUR S

US6 patents

⚠️ This page may combine multiple inventors who share the name “ZERFAHS ARTHUR S”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

GEN SIGNAL CORP

2 patents

US5089694AFeb 18, 1992

Card reader device having automatic means for clamping the card to be read and for automatically ejecting the card at the end of the card reading and writing operations

GEN SIGNAL CORP18 citations71

US5225665AJul 6, 1993

Ticket originating and processing device for transit vehicle

GEN SIGNAL CORP16 citations70

QONAAR CORP

1 patent

US4453667AJun 12, 1984

Bill transport system for a farebox

QONAAR CORP23 citations79

SYNERGETICS INC

1 patent

US4094104AJun 13, 1978

Finishing machine

SYNERGETICS INC17 citations65

GEN RAILWAY SIGNAL CORP

1 patent

US6102387AAug 15, 2000

Automated sheet dispenser

GEN RAILWAY SIGNAL CORP4 citations60

JUPA EDWARD C

1 patent

US4145911AMar 27, 1979

Temperature sensitive liquid column measuring and calibrating apparatus

JUPA EDWARD C5 citations52