The high court affirmed the lower court's decision in his favor, forcing the company to compensate him. In 1968, Louis Perez, a Blumenthal employee, sued the company in the Supreme Court of Pennsylvania, claiming he was forced to work in exposure to a heavy concentration of dust and excessive heat in his employment. After the sale, a new company, Ward Candy, was formed with Bernhard S. The principal reason for the sale, reportedly, was that few of the third generation of Blumenthals were interested in managing the company. The company was founded in 1909 and existed under Blumenthal family management until 1969 when it was sold to Ward Foods, a New York-based conglomerate best known for making Tip Top bread. Its factory was located at Margaret and James Streets in the city's Frankford neighborhood. ![]() The Blumenthal Brothers Chocolate Company was a Philadelphia-based chocolate manufacturer that existed from 1909 to 1984. ( September 2016) ( Learn how and when to remove this template message) Please do not remove this message until conditions to do so are met. ![]() Relevant discussion may be found on the talk page. There is no enclosed glass cover around the cutting/grinding chamber which makes this a safety risk when in use.The neutrality of this article is disputed. However, it is known that this vacuum generator is not effective and not reliable, especially at high altitudes. The Petrothin has an integrated vacuum generator, which requires air pressure to work. There is no illumination which makes it very difficult to observe the sample when grinding or cutting. The Petrothin can only grind one sample at a time, so not suitable when multiple sample preparation is required. You can only cut specimens on glass slides with the Buehler Petrothin, so it is not possible to cut small pieces of rock unless you stick them to a slide first. The main advantage the Geoform has over the Buehler Petrothin is that it has a seperate cutting chamber, so on the Petrothin, the grinding and cutting must be done in the same chamber. There are a number of features that the Geoform has compared to the Buehler Petrothin. The Geoform compared to the Buehler Petrothin
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