Education and demonstration – Means for demonstrating apparatus – product – or surface...
Patent
1987-09-03
1989-06-06
Garrett, Robert E.
Education and demonstration
Means for demonstrating apparatus, product, or surface...
434201, 434202, 434227, 235 1D, 200 5R, 200 5A, 340757, 340712, 353 42, 353 44, 353DIG3, 364708, G09B 1900, G09B 1902, G06C 502
Patent
active
048367869
ABSTRACT:
A hand-held calculator for use in conducting classroom demonstrations of the operation thereof, including use of the operation instruction key means. The calculator comprises a frame, a keyboard section, data processing means and a display section and where both the keyboard and display sections are transparent to permit images thereof to be projected on a screen for teaching purposes.
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HFD--Retailing Home Furnishing, page 75--Panasonic Solar Calculator with transparent keyboard.
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.
Design patent application Ser. No. 083,414 filed Aug. 7, 1987.
Garrett Robert E.
Joseph Leeb Enterprises, Inc.
Price Carl D.
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