In 1907, Bauer built his first film projector. Bauer's projectors were known for their high reliability. But they also were equipped with a fundamentally new feature: up to that point, film ran through the projector and then fell into a laundry basket. But thanks to Bauer's advance, the film wound around a reel.
In 1914, Bauer introduced his third model to the market. This projector sealed off the sensitive operating parts and included a built-in slide projector.
Bauer took a giant step with the creation of the left projector in 1925: with this development, it became possible for the first time to show a film without interruption by using two projectors.
Bauer expanded his sales force and served all European countries, just as he had done before the war.

In 1928, sound film replaced silent movies. Films were now accompanied by a record instead of piano music. But the result was enormous synchronization problems for the picture and sound. Eugen Bauer developed "sound-on-disc equipment": the equipment enabled the film projector and the record player to be synchronized. As optical sound was further developed, sound eventually could be recorded directly onto the film.
By this time, Bauer had become the market leader in movie projectors, exporting about 75 percent of its products. Bosch also began to show interest in Eugen Bauer GmbH, and, as part of a diversification effort, it began to acquire the company little by little from 1932. As a Bosch subsidiary, it became known as "Kinobauer".
Thanks to increasing numbers of new innovations, new generations of film projectors, and the exceptional reliability that characterized these products, Kinobauer gained international renown.

The glory years of German film and the introduction of drive-in theaters in the 1950's led to a breakthrough for Bauer. Bauer film projectors sent unforgettable dream worlds dancing across the big screen.
At the beginning of the 1950's, Bauer projection technology teamed up with Siemens movie sound systems, and the partnership known as "Bauer-Klangfilm" equipped hundreds of movie theaters.
In 1972, Kinobauer presented the first punch-card control projection system for movie theaters at "photokina": it made it possible to show films uninterrupted for up to two and a half hours and was outfitted with a punch-card reader for the automatic control of the operating technology, from light dimming to the interlude music.

In addition to its focus on professional equipment, Bauer had begun to create a second business pillar as early as the 1930's: the market for 8-mm cameras used by amateurs.
In 1953, Bauer introduced the double-eight camera. This product and the super-8 film equipment developed later formed the foundation for Bauer's rise to the world's biggest-selling maker of amateur cameras.
Since the end of the 1950's, Bauer had striven to find other areas of diversification and expanded its product line-up, including its own 35-mm SLR camera, slide projectors, and flash equipment.
In the 1970's, another wave of expansion swept across the world. Some Bauer products were even produced on site for local markets, while some were simply marketed locally.

Bosch-Photokino's story of success ended abruptly. After television flooded private living rooms in the 1970's, potential moviegoers decided to stay home, and a killer plague struck large movie theaters. As a result, the market for large theater equipment shrank dramatically. It experienced a similar collapse of its amateur film business at the end of the 1970's, when low-priced competitive products from Asia flooded the marketplace.

So it was that 70 years of success came to an abrupt end.