Name and Address Changes
- 1951, United Trading Company, 204 Milk St., Boston 9, Mass.
- 1952, United Scientific Company, affiliated with United Trading Company, 204 Milk St., Boston 9, Mass
- 1953, dropped the United Trading Company affiliation and expanded the address: United Scientific Company, 204-6 Milk St., Boston 9, Mass
- 1956, Unitron Instrument Division of United Scientific Company, 204-6 Milk St., Boston 9, Mass
- 1960, Unitron Instrument Company, Telescope Sales Division, 66 Needham St, Newton Highlands 61, Mass
- 1975, Unitron Scientific, Inc, 66 Needham Street, Newton Highlands, MA 02161
- 1976, Unitron Instruments, Inc, 101 Crossways Park West, Woodbury, New York 11797, listed as sub of Ehrenreich Photo-Optical Industries, Inc
- 1979, Unitron Instruments, Inc., 175 Express Street, Plainview, New York 11803
- 1991, Unitron, Inc., 170 Wilbur Place, P.O. Box 469, Bohemia, New York 11716
- 2001, Unitron, Inc., 120 Wilbur Place, P.O. Box 469, Bohemia, New York 11716
- 2008, Unitron, Inc, 73 Mall Drive, Commack, New York 11725
