100 + years
An article in This Old House magazine (July 2015) highlighted 37 businesses that have been in existence for over 100 years. These were American companies that made products for the home.
The key pont of the article was that these 37 companies made quality products that have stood the test of time. While some of the business still used machinery from the past….they also were able to innovate when necessary.
Quality wins every time….and without the quality there is no longevity.
http://www.thisoldhouse.com/toh/magazines
Some of the Companies: Sherwin-Williams, Stanley Hand Tools & Black+Decker, Briggs & Stratton, Toro, Armstrong, Honeywell, Kohler Co and Council Tool (NC)