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In 2018, the walls of the choir at Ulm Minster, the church with the world's tallest steeple, were cleaned with battery-operated backpack vacuums. [98] In 2020, Kärcher simultaneously cleaned the South Tower of Berlin Cathedral [99] and the world's largest Bismarck Monument in Hamburg. [100]
A hand-powered pneumatic vacuum cleaner, c. 1910. An early electric-powered model is also shown. The first vacuum-cleaning device to be portable and marketed at the domestic market was built in 1905 by Walter Griffiths, a manufacturer in Birmingham, England. [13]
The SCR-300 operated in the 40.0 to 48.0 MHz frequency range, and was channelized. Along with other mobile FM tank and artillery radios such as the SCR-508 (20.0 to 27.9 MHz) and the SCR-608 (27.0 to 38.9 MHz), the SCR-300 marked the beginning of the transition of combat-net radio from low-HF AM/CW to low- VHF FM.
Shark Navigator Lift-Away XL Upright Vacuum Cleaner, $97 (was $200): Lowest price on the web HP Stream 14 inch Windows Laptop, $199 (was $229): Comes with free 1-year subscription to Office 365
Inse Cordless Vacuum, $90 (originally $430): Leave fussy cables in the dust (as it were) with this cordless vacuum cleaner from the folks at Inse. It features a high-efficiency motor to provide ...
It's battery-powered, so you can take it to the farthest reaches of your backyard, and it can slay wayward branches and spindly overgrown trees with ease. $32 at Walmart Szrsth Outdoor Solar ...