The Doorbell of the Future
By Dane Carlson on June 7, 2013 in Inventions
Is this the doorbell of the future?
Click the image for a larger version.
Business Opportunities Weblog editor and publisher Dane Carlson
lives in the Sierra Nevada mountains of California, just 15 miles from Yosemite National Park. He accidentally became a professional blogger in 2001
. He has added 12,208 posts to the site.
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