History
2003
Becomes Independent Company
Rantec Power Systems bought from ESCO by management group, becomes independent company under RPS Holdings
2000
Rantec Power Systems Inc.
Rantec company name change to Rantec Power Systems Inc. Rantec Microwave division sold. Rantec stand-alone power supply company created.
1990
Stand-alone Public Company
ESCO (now ESCO Technologies Inc.) formed as a stand-alone public company as a result of a spin-off from Emerson Electric
1988
PTK merged into Rantec
1984
PTK acquired by Emerson Electric Company
1971
Low Voltage Product Line
PTK founded in Los Osos, California, Rantec acquired Low Voltage product line from Litton
1964
Rantec acquired by Emerson Electric Company
1956