Symbol indication drum

Printing – Antismut device – Anti-offset material application

Patent

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Details

101 38R, 116114R, B41M 140, G01D 1312

Patent

active

040361349

ABSTRACT:
A drum is formed on its outer peripheral surface with symbols and symbol position ascertaining marks, and a tester of simple construction is used for testing whether or not the symbols are positioned with a high degree of precision. The symbols, which include characters, numerals, code marks and the like, are superposed directly on the drum by printing or etching or indirectly by affixing to the drum body a belt on which the symbols are positioned. The drums can be used with any apparatus requiring symbol indication, e.g. time measuring instruments, gas meters, or calculators.

REFERENCES:
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patent: 3696738 (1972-10-01), Walker
patent: 3727833 (1973-04-01), Muller
patent: 3808971 (1974-05-01), Staamann

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