Communications: electrical – Continuously variable indicating – With meter reading
Patent
1991-03-27
1994-01-04
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
34082503, 307125, 439502, 439620, 375 36, 200 5104, H04Q 100
Patent
active
052764435
ABSTRACT:
A multiplexor for use with a computer having a parallel port, for providing multiple separately addressable auxiliary parallel ports.
REFERENCES:
patent: 4446459 (1984-05-01), Bond, Jr. et al.
patent: 4607379 (1986-08-01), Marshall, Jr. et al.
patent: 5107260 (1992-04-01), Meissner
"Black Box Catalog" Jul. 1985 p. 78 Port expander.
"Basic Electronics Technology" 1985 pp. 379-403 by Radio Shack.
Radio Shack Catalog 1991, p. 171 "printer selector".
Gates Dirk I.
Matthews James K.
Pooley Monte A.
Rosen David B.
Xircom, Inc.
Yusko Donald J.
Zimmerman Brian
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