File:3M wordmark.svgirfaan English 3M logo German 3M Logo Simplified Chinese 3M公司标志。由Siegel & Gale 于1977年设计。 determination method or standard: SHA-1
File:3M wordmark 1961.svgDescription3M wordmark 1961.svg English: Logo of 3M used from 1961 to 1978 Date 1961 Source https://static.wikia.nocookie.net/logopedia/images/0/01/3M_1961_Logo
File:3M Company wordmark 1961.svgDescription3M Company wordmark 1961.svg English: Logo of 3M used from 1961 to 1978, "3M Company" version Date 1961 Source https://static.wikia.nocookie
File:3M Brand wordmark 1961.svgDescription3M Brand wordmark 1961.svg English: Logo of 3M used from 1961 to 1978, "3M Brand" version Date 1961 Source https://static.wikia.nocookie
File:3M wordmark 1961 no bar.svgDescription3M wordmark 1961 no bar.svg English: Logo of 3M used from 1961 to 1978, barless version Date 1961 Source https://static.wikia.nocookie
