About Demco
Demco's history begins with Robert Dethmers, who started as a blacksmith and later ran an Allis Chalmers dealership with his father. In 1958, he sold the business and shifted to building agricultural equipment. By 1964, he founded Dethmers Manufacturing Company (Demco). After his passing in 1974, Jim Koerselman and Ken Mulder took over ownership. In the 1980s, during the Farm Crisis, Demco diversified by creating the Kar Kaddy, which saved the company. Over the years, Demco expanded further by acquiring companies like Maurer Manufacturing and adding new products, including 5th-wheel hitches and braking systems.
Today, Demco remains family-owned and is led by Bob Koerselman, Kevin Ten Haken, and James Koerselman. They continue to uphold the company’s values, focusing on innovation, relationships, and community. Demco recently renovated its first building in Boyden to include a Heritage Center that showcases its 60-year history and a training facility called DEPOT.
Demco Heritage Center
In the same building where Demco Manufacturing began in 1948, you can see how the company has grown over the years. Explore products that have endured through time and others that marked different phases. Take a walk through our history to see how innovation and dedication have shaped Demco into the company it is today.
DEPOT - Demco Educating Professionals & Onsite Training
Fueling Innovation with Learning
Accommodations
The Depot serves as a training facility for employees, distributors, dealers, and customers. It features 12 bedrooms, each with a private bathroom; a full kitchen and bar area, and multiple comfortable sitting spaces.
Classroom Learning
The front section of the Depot is designed as a classroom, equipped with large screens, audio systems, and complete technology capabilities for presentations.
Webinars
Webinars are an excellent way to engage with a wide audience, no matter their location. We can share expertise, provide demonstrations, and interact with participants in real-time, all from a virtual platform.
Immersive Training
In the back of the Depot, there’s an indoor 8200 square-foot space dedicated to immersive training and webinars. Any Demco product can be brought in for demonstrations and hands-on instructional learning.
