Company history †•1914 - Microscope production begins with MK? model •1917 - Company name changes to Matsumoto Seizousho ["Matsumoto Manufacturing Company"] •1934 - The limited partnership Matsumoto Seizousho was renamed Tiyoda Seizousho ["Tiyoda Manufacturing Company"] •1942 - Company name changes to "Chiyoda Optical Industry Co., Ltd." •1944 Dec 7 - Logo? first used •1957 - Company names changes to "Tiyoda Manufacturing Co., Ltd." •1973 Aug 13 - Logo trademark applied for in US, serial no. 72465545 •1976 - Factory closes Production history †•1914 - MK? Production begins •1934 - MKA?, MKQ, MKO?, MKM?, MKR production begins •1946 - A? (ACM), B? BSB, BSE?, BSG? production begins •1947 - L-type LCM, LTD, LTG, LTG-mo? production begins •1949 - First production of phase contrast microscopes in Japan begins by Tiyoda •1950 - Pocket Microscope V? begins •1954 - Fluorescence microscope apparatus H-200?, H-250? •1959 - R? (R, R1) •1965 - Nuclear emulsion microscope AI, AII, AIII, CI, CII •1966 - (B2mo, B2bi) B2 •1966 - remote control device •1970 - R21? type Chiyoda microscope (R21bi R21tr) •1974 - (MT-A, Chiyoda new microscope type MT MT-B ) Sources † |