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Title: Symbols for identifying characteristics

Abstract: Presenting a plurality of characteristics by presenting each characteristic using a symbol which per se identifies the characteristic by three concurrent visual impressions (quantity, tone, and extent) and is adaptable for use with any desired grey or tone scale.


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Inventors: Fisher, Howard T. (Cambridge, MA, US)

Application Number: 584938
Filing Date: 1976-06-09
Publication_date: 1979-04-10
Assignee:
Primary Class(es): 283/34
Other Classes:
US Patent Ref:
58748Oct, 1866Apgar et al.283/34.
1512598Oct, 1924Harriman283/34.
2924895Feb, 1960Bachi35/24.

Other Refs:
Primary Examiner: Schnall, Jerome
Assistant Examiner:
Attorney: