Communications: electrical – Systems – Portable self-contained
Patent
1994-09-01
1996-09-17
Hofsass, Jeffery
Communications: electrical
Systems
Portable self-contained
340321, 340323R, G08B 2300
Patent
active
055572537
ABSTRACT:
This invention concerns a device for confirming an official's call in a field sport, including a flag for waving to visually indicate to others that the event has occurred, a shaft upon which the flag is loosely attached, a handle to support the shaft integral therewith, a power source, an electronic signal generator and transmitter, and a receiver worn by another offical for receiving the signal in confirmation of the official's call.
REFERENCES:
patent: 4541013 (1985-09-01), Alpert
patent: 4785282 (1988-11-01), Martell et al.
patent: 5408221 (1995-04-01), Carsella, Sr. et al.
Hegemann Kenneth J.
Stern Max M.
Hofsass Jeffery
Lieu Julie B.
Murphey, Esq John J.
Stern Max M.
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