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m (Peter moved page File:Tek march 1971 new products.pdf to File:Tektronix New Products Summer 1972.pdf) |
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Document is "Supplement 6 to March 1971 catalog", copyright date 1972. | |||
Information on page 6 puts it after the May 1972 update and before September 1972 when the new catalog was supposed to be published according to this page. | |||
Likely publishing date therefore 06-08/1972. |