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Rieke developed the first retractable spout for pails, the FLEXSPOUT , which became the first commercial product made from polyethylene. In the 1950s, Rieke developed the POLYGRIP plastic crimp-on closure which became the standard for the fiber drum
Harvard Card Systems is a Los Angeles, CA-based company in the Manufacturing sector.
Makray Manufacturing Co Inc is a Norridge, IL-based company in the Manufacturing sector.
Tandem Products Inc is a Minneapolis, MN-based company in the Manufacturing sector.
Mikros Engineering, Inc. is a Minneapolis, MN-based company in the Manufacturing sector.