Calculator

Details Calculator Calculator

1987-08-07

1989-04-04

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Calculator

D18 2, D19 64

Patent

active

D03005399

REFERENCES:
patent: 4154007 (1979-05-01), Judd
patent: 4468203 (1984-08-01), Gimmestad et al.
patent: 4711992 (1987-12-01), Sekine
Catalog 1--Smart Products by Polyflame Concepts, ASI #78897 (1987), pp. 1,3.
Product identified in Jan. 1987 Distributor Price List (also enclosed).
Catalog 2--1987 The Catalog, cover and p. B4 (both sides).
Catalog 3--1988 Tagmaster Advertising Specialties Showcase, cover and p. 5.
Catalog 4--Enterprex Int'l Corp. promotional sheet (undated) Possibly related product identified in price list, p. 11, dated 12/31/86.
HFD-Retailing Home Furnishing, 1/7/85, p. 75--Panasonic Solar Calculator w/transparent Keyboard.

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