Boots – shoes – and leggings
Patent
1991-11-26
1993-08-03
Mai, Tan V.
Boots, shoes, and leggings
36471505, G06F 738
Patent
active
052335526
ABSTRACT:
The specification discloses a hand-held calculator of the type used by teachers in averaging grades. The calculator permits intermixed entry of letter grades and numeric grades in an averaging sequence. A weight table may be stored in the calculator for automatic nonlinear weighting of inputted grades in the averaging process. An excused absence key permits a data entry that will not affect the average of the other inputted grades. The calculator permits display in any one of a variety of modes, such as letter grade, percent, and total points.
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patent: 4048484 (1977-09-01), Brittan
patent: 4118783 (1978-10-01), Collins
patent: 4225932 (1980-09-01), Hirano et al.
patent: 4282580 (1981-08-01), McGuire et al.
patent: 4715011 (1987-12-01), Brittan
patent: 5101368 (1992-03-01), Kaplan
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