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A comment on That Old-Time Hucksterism: The Oddest Doohickeys of Industrial-Age Entrepreneurs.

Re:That Old-Time Hucksterism: The Oddest Doohickeys of Indus... by Animats on Friday January 20, 2017 @02:22PM (#13446283)
Doorstop alarms were not odd. They are still available. From General Electric, at WalMart, no less.[1]

[1] https://www.walmart.com/ip/GE-Door-Stop-Alarm/10258356

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