Combination calculator and clock

Details Combination calculator and clock Combination calculator and clock

1992-04-17

1994-04-05

Douglas, Alan P.

Printing and office machinery

Typewriter or calculator

Calculator

D10 71

Patent

active

D03457575

REFERENCES:
patent: D161913 (1951-02-01), Fraim
patent: D245109 (1977-07-01), Yoshioka
patent: D283493 (1986-04-01), Li
patent: D283515 (1986-04-01), Li
patent: D284387 (1986-06-01), Li
patent: D286161 (1986-10-01), Wong
A sales description of a calculator/pagefinder from Exec-u-calc, date unknown.
A sales description of a calculator/pagefinder from Tronica Electronic Engineering Co., Ltd. Item Nos. 515-2 and 515-3, date unknown.
A sales description of a calculator/pagefinder from Fortune, date unknown.
A sales description of a calculator/pagefinder from Exact Grow Electronics Limited, Item No. EG854, p. 159 (Apr. 1990).
A sales description of a calculator/pagefinder from Tronica Electronic Engineering Co., Ltd., Item No. FC 515-3, p. 284, (Apr. 1990).
A sales description of a calcuator/pagefinder from Signatures, Item No. 12-13882-2, (1991).
A sales description of a calculator/pagefinder from Day-Timers, Item Nos. 90558 and 90758, p. 59, date unknown.
A sales description of a calculator/pagefinder from Tronica Electronics Engineering Co., Ltd., Item Nos. 515-22, 515-2, and 515-3, date unknown.
A sales description of a calculator/pagefinder from Ewig Industries Co. Ltd., Item No. JC14, p. 157, (Apr. 1990).
A sales description of a calculator/pagefinder from Exact Grow Limited, Item No. EG853, date unknown.

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