Aquapac
Aquapac is a registered trademark and brand name of a UK-based manufacturing company, Aquapac International Limited, specializing in waterproof cases and bags. The privately owned company was formed in 1983 and holds patents worldwide on systems for sealing bags and cases. The range commenced with a waterproof case for the original Sony Walkman known as the ‘Aquaman’, followed by cases for handheld VHF radios. Following Motorola’s invention of the first cellphone Aquapac launched the world’s first waterproof cellphone case. Nokia was an important customer for these cases during the 1990s, as were cellphone operators such as Deutsche Telekom and NTT DoCoMo. Aquapac went on to launch waterproof cases for other handheld electronics such as cameras and eReaders. The company operates out of factories in London, England.
Pavel Golubitzky
Major inventions took place in the 1880s. In 1882 he designed a multi-pole phone. By this time the phone line was already organized in many cities around the world. However, it was of poor quality, and in 1883 at the Munich electrical exhibition of the expert Commission was given the conclusion that the system used "is suitable for the transmission of sound at distances up to ten kilometers."