Education and demonstration – Means for demonstrating apparatus – product – or surface... – Lubricant or lubrication
Patent
1987-03-30
1988-03-15
Grieb, William H.
Education and demonstration
Means for demonstrating apparatus, product, or surface...
Lubricant or lubrication
G09F 500
Patent
active
047310286
ABSTRACT:
A display device for the sale of automotive motor oil or other automotive fluids includes a plurality of transparent containers juxtaposed with respect to each other. Motor oil or a predetermined type of automotive fluid, or its visual equivalent, is provided within predetermined ones of the containers, each of the containers having therein the fluid, or its visual equivalent, which has been subjected to automotive use for a predetermined period different from the period of use of the fluid within each of the other ones of the predetermined containers.
REFERENCES:
patent: 1925254 (1933-09-01), John
patent: 2086771 (1937-07-01), Jester
patent: 2133544 (1938-10-01), Kolb
patent: 2419658 (1947-04-01), Rogers
patent: 2700228 (1955-01-01), Fainman
Grieb William H.
Kettlestrings Donald A.
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