| 1946 | Founded by J. Constant van Rijn |
| 1949 | Incorporated as Rotron Manufacturing Company |
| 1955 | Began running high-temperature life tests on cooling fans |
| 1958 | Patented inverted inside-out motor design for airmovers |
| 1958 | Developed industry standard Muffin fan for electronics cooling |
| 1960 | First traded on Common OTC stock exchange |
| 1961 | Created/released MIL-B-23071 standard for AC fans for US military |
| 1973 | Formed Custom, Commercial and Industrial divisions |
| 1976 | Acquired by EG&G, and became known as EG&G Rotron |
| 1981 | Began providing Large Vaneaxial fans to the aircraft industry |
| 1983 | Introduced electronically commutated brushless DC (ECDC) fan |
| 1983 | Acquired Frank Hill Associates (FHA), currently known as AMETEK Rotron El Cajon |
| 1985 | Sold Commercial Division currently known as Comair Rotron |
| 1990 | Re-organized Custom Division into Mil/Aero and Hi-Rel segments |
| 1990 | Began continuous improvement and JIT initiatives |
| 1998 | Purchased by AMETEK and became AMETEK Rotron |
| 1998 | Moved Hi-Rel segment to Kent, OH |
| 1999 | Received ISO 9001 registration |
| 2002 | Magnum 170 ECDC fan introduced to Telcom market with UL/TUV approvals |
| 2002 | Corporate Acquisition of Air Technologies, England ISO 9001-2000 project initiated/Six Sigma initiative established. |
| 2004 | ISO 9001:2000 and AS9100:2004 approved. |
| 2007 | Rotron celebrates 60th year of operations. |
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