Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Having specialized input
Reexamination Certificate
2006-04-25
2006-04-25
Mai, Tan V. (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Having specialized input
Reexamination Certificate
active
07035885
ABSTRACT:
A hand-held calculating apparatus for solving a plurality of formula-related calculations and conversions commonly encountered in the machinist trade having a visual display and a keyboard including key groupings denominated as basic arithmetic and memory, function and conversion, timing and clear and on/off keys. The function and conversion key grouping permit a user to automatically convert among dimensional measurements in different systems while continuing to utilize an earlier calculated result in the present calculation.
REFERENCES:
patent: 4845652 (1989-07-01), Bunsen
patent: 4852057 (1989-07-01), Patton
patent: 4885714 (1989-12-01), Eisenstein et al.
patent: 4972322 (1990-11-01), Asakura et al.
patent: 5007008 (1991-04-01), Beers
patent: 5020012 (1991-05-01), Stockberger et al.
patent: 5050115 (1991-09-01), Matsuda et al.
patent: 5067102 (1991-11-01), Eisenstein
patent: 5138566 (1992-08-01), Comforti
patent: 5245536 (1993-09-01), Hsieh
patent: 6748404 (2004-06-01), Chen et al.
Mai Tan V.
Piltch, Esq. Sanford J.
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